Games starting with O

Platform:
action open content
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: git.code.sf.net/p/ogrian/code
Platforms: Simple mahjong solitaire game with 3D graphics.
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: hg.code.sf.net/p/osrpgcreation/code
Code dependencies: CEGUI, OGRE
Build system: CMake
Platforms:
arcade content open side-scrolling
Homepage: osgg
Download: osgg/files
Technical info
Code languages: C++, C
Code licenses: GPL-3.0
Code repositories: DusteDdk/osgg.git( since 2012, ), osgames/osgg.git @add( since 2019, ), svn.code.sf.net/p/osgg/code
Code dependencies: OpenGL, SDL
Assets licenses: Artistic license-1.0
Build system: Make
Platform:
strategy content open real-time space
Universe Simulator.
Homepage: movitto/omega
Technical info
Code languages: JavaScript, Ruby
Code licenses: AGPL-3.0
Code repositories: movitto/omega.git( since 2009, )
Assets licenses: CC BY-SA, Public domain, GPL
Platform:
remake content commercial + original required
Aims to be pixel-perfect, bug-for-bug clone.
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: sulix/omnispeak.git( since 2012, )
Build system: Make
Platform:
remake content open multiplayer online
Multiplayer survival game of parenting and civilisation building.
Technical info
Code languages: C, C++, PHP
Code licenses: Public domain
Code repositories: jasonrohrer/OneLife.git( since 2017, )
Assets licenses: Public domain
Platform:
arcade content open
Developer: Olli Etuaho
Technical info
Code languages: Python
Code licenses: GPL-2.0
Code dependencies: pygame
Assets licenses: GPL-2.0
Platform:
Inspiration: Sensitive
Technical info
Code languages: Lua
Code licenses: GPL-3.0
Code dependencies: LÖVE
Platform:
strategy chess
Developer: Michael Speck
Technical info
Code languages: PHP, JavaScript
Code licenses: GPL-2.0
Code repositories: svn.code.sf.net/p/lgames/code
Inspiration: NScripter
Technical info
Code languages: C++
Code licenses: GPL-2.0
Build system: Make
Platforms:
simulation 3D clone space trading
Technical info
Code languages: Objective-C, C, JavaScript
Code licenses: GPL-2.0
Code repositories: OoliteProject/oolite.git( since 2013, )
Code dependencies: Cocoa, SDL
Assets licenses: CC-BY-NC-SA
Inspiration: Cube 2: Sauerbraten
Developer: Henry Hirsch
Technical info
Code languages: C++, C
Code licenses: zlib
Code repositories: team-cube/open-cube.git( since 2015, )
Build system: Make
Platform: Flood fill puzzle game.
Technical info
Code languages: Java
Code licenses: MIT
Code repositories: GunshipPenguin/open_flood.git( since 2016, )
Build system: Gradle
Platforms:
remake content commercial + open (some demo content) + original required
Homepage: openfodder.com
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: OpenFodder/openfodder.git( since 2012, )
Platform:
remake content commercial modification multiplayer competitive + online + LAN + co-op + matchmaking
Mod of Team Fortress 2.
Inspiration: Team Fortress 2
Homepage: openfortress.fun
Technical info
Code languages: C++
Code licenses: CC-BY-NC-SA-4.0, Custom
Code repositories: KaidemonLP/Open-Fortress-Source.git, svn.openfortress.fun/svn/open_fortress
Code dependencies: Source SDK
Platform:
arcade clone free content
This is an engine recreation of a Pac-Man clone called Greedy by French demogroup Eclipse. Originally written for DOS and sold as shareware, Greedy was later ported to Windows and eventually made a free, but not open source game. Open Greedy attempts to recreate the game's engine for proper cross-platform compatibility.
Inspiration: Pac-Man
Developer: atroel
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: atroel/open-greedy.git( since 2014, )
Code dependencies: SDL2
Platform:
puzzle clone
Technical info
Code languages: C++, C
Code licenses: AFL-3.0
Code repositories: SuperV1234/SSVOpenHexagon.git( since 2012, )
Platforms:
remakesimulation content commercial + original required flight
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: undefined-darkness/open-horizon.git( since 2014, )
Code dependencies: nya-engine
Platform:
remakestrategy turn-based
Technical info
Code languages: Java
Code licenses: LGPL-3.0
Code repositories: akarnokd/open-ig.git( since 2015, )
Platform:
remakerole playingsimulation multiplayer online space
Early development.
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/opengate/code
Platforms:
Inspiration: Kick Off 2
Technical info
Code languages: Java
Code licenses: MIT
Code repositories: ssenegas/kickoff.git
Build system: Gradle
Platform: The players play mighty heroes and wicked villains in order to tell stories of epic proportion.
Technical info
Code languages: None
Code licenses: Custom
Code repositories: openlegend/core-rules.git( since 2014, )
Platform:
remakerole playing multiplayer online + massive
Meridian 59 is a long-running medieval fantasy combat and adventure MMO.
Technical info
Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: OpenMeridian/Meridian59.git( since 2013, )
Platform:
remakestrategy online tiles turn-based
License of artwork?
Technical info
Code languages: JavaScript
Code licenses: GPL-2.0
Code repositories: nicupavel/openpanzer.git( since 2012, )
Platforms:
strategy content open
Implementation of the GPL Quake source.
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: osgames/openquartz.git( since 2019, ), openquartz.cvs.sourceforge.net
Assets licenses: ?
Build system: Make
Platform: Train simulator for the largest collection of digital content in the world - routes, rolling stock and activities.
Technical info
Code languages: C#
Code licenses: GPL-3.0
Code repositories: svn.uktrainsim.com/svn/openrails
Platforms:
Inspiration: Rodent's Revenge
Developers: Pierre, Pierre-Yves
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: pierreyoda/o2r.git( since 2017, ), svn.code.sf.net/p/o2r/code
Code dependencies: Qt, SFML
Platform:
adventure content open
Server side implementation of an open virtual 3D world in which users can create their own content. It was founded in 2007 as an open source alternative to Second Life and is compatible to Second Life clients.
Inspiration: Second Life
Technical info
Code languages: C#
Code licenses: 3-clause BSD
Code repositories: opensim/opensim.git
Code dependencies: MonoGame
Assets licenses: ?
Platform: Soccer manager game in which you are not the manager or trainer, but the player.
Developer: Daniel Mecke
Technical info
Code languages: PHP
Code licenses: GPL-3.0
Code repositories: dmecke/OpenSoccerStar.git( since 2014, )
Platform: See also https://sourceforge.net/p/opensyobon/bugs/4/
Inspiration: Shobon Action
Developer: Mathew Velasquez
Homepage: opensyobon
Download: opensyobon/files
Technical info
Code languages: C++
Code licenses: ?
Platform:
Inspiration: Stardew Valley
Technical info
Code languages: C++
Code licenses: CC-BY-NC-SA-4.0
Code repositories: gitea.it/rixty/OpenValley.git
Code dependencies: SDL2, Flare engine
Platforms:
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/openyahtzee/code, osgames/openyahtzee.git @add( since 2019, )
Platform:
action clone content original required
Game Development Software.
Inspiration: Legend of Zelda
Technical info
Code languages: C, C++
Code licenses: zlib
Code repositories: openzelda/openzelda-source.git( since 2015, )
Assets licenses: proprietary, CC-BY-NC-SA-3.0, CC-BY-SA-2.5
Platforms:
puzzle content open
Falling block puzzle game.
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: svn.code.sf.net/p/openalchemist/code
Code dependencies: ClanLib
Assets licenses: CC-BY-SA 2.0
Platforms:
actionremake first-person shooter
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: OpenArena/engine.git( since 2014, ), suijingfeng/vkOpenArena.git @add( since 2018, )
Platforms:
remakesimulation content commercial + original required (?)
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: openblack/openblack.git( since 2018, )
Code dependencies: OpenGL, SDL2
Build system: CMake
Platforms:
puzzle clone
Inspiration: Tetris
Developer: Mátyás Mustoha
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: mmatyas/openblok.git( since 2016, )
Build system: CMake
Platforms:
simulation game maker
Make games with a built-in physics engine, Lego-like building blocks, and a scripting language called Lua.
Technical info
Code languages: Python, Lua
Code licenses: GPL-3.0
Code repositories: hg.code.sf.net/p/openblox/openblox, osgames/openblox.git @add( since 2019, ), hg.code.sf.net/p/openblox/bloxstaller
Code dependencies: Panda3D, wxPython
Assets licenses: CC-BY-SA-3.0
Platform:
game engine 2D clone content open
2D side-scrolling engine for beat em' ups, shooters like Streets of Rage, Double Dragon, Final Fight. [Completed modules](http://www.chronocrash.com/forum/index.php?board=10.0)
Technical info
Code languages: C, C++
Code licenses: 3-clause BSD
Code repositories: DCurrent/openbor.git( since 2017, )
Code dependencies: SDL2
Build system: Make
Platforms:
simulation clone content open
Technical info
Code languages: C#
Code licenses: Public domain
Code repositories: leezer3/OpenBVE.git( since 2015, )
Platform:
game engineremakesimulation content original required
Restarted in 2020.
Technical info
Code languages: C, C++
Code licenses: LGPL-2.1
Code repositories: openc2e/openc2e.git( since 2020, ), ccdevnet/openc2e.git @add( since 2008, ), nornagon/openc2e.git @add( since 2013, )
Build system: CMake
Platform:
simulation 3D clone
Another 3D city simulator. https://github.com/frodrigo/opencity, https://github.com/vorot93/opencity, https://github.com/AnotherFoxGuy/OpenCity Took inspiration from https://sourceforge.net/projects/freereign/. See also [OpenCityNeo](https://github.com/icecoolinux/opencityneo)
Inspiration: SimCity
Developers: Duong Khang NGUYEN, frodrigo
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: osgames/opencity.git( since 2019, ), svn.code.sf.net/p/opencity/code, opencity.cvs.sourceforge.net
Platform:
remake content commercial + original required
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: pjasicek/OpenClaw.git( since 2017, )
Code dependencies: Box2D, SDL
Build system: CMake
Platform:
remake content commercial + original required
Inspiration: Crystal Caves
Developer: Simon Sandström
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: gurka/OpenCrystalCaves.git( since 2017, )
Platforms:
actionremakerole playing content commercial + original required
Inspiration: Diablo 2
Homepage: opendiablo2.com
Technical info
Code languages: Go
Code licenses: GPL-3.0
Code repositories: OpenDiablo2/OpenDiablo2.git
Platform:
strategy clone content open multiplayer online text-based
Technical info
Code languages: PHP
Code licenses: AGPL-3.0
Code repositories: OpenDominion/OpenDominion.git( since 2015, )
Code dependencies: Laravel
Platform:
remakestrategy real-time
Inspiration: Dogs of War
Developer: rofl0r
Homepage: rofl0r/openDOW
Technical info
Code languages: C
Code licenses: GPL-3.0
Code repositories: rofl0r/openDOW.git( since 2013, )
Build system: Make
Platform:
remakestrategy content original required
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: OpenDUNE/OpenDUNE.git( since 2012, )
Platforms:
strategy clone real-time
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenDungeons/OpenDungeons.git( since 2014, )
Platform: See also https://elementsthegame.fandom.com/wiki/Elements_the_Game_Wiki
Homepage: etg.dek.im
Play online: etg.dek.im
Technical info
Code languages: JavaScript
Code licenses: MIT
Code repositories: serprex/openEtG.git( since 2013, )
Platform:
action clone
Inspiration: Fire Power
Developer: KaiN
Technical info
Code languages: C
Code licenses: MIT
Code repositories: Last-Minute-Creations/openFire.git( since 2016, )
Platform:
remakesimulation free content
The project aimed to create an updated flight simulation engine compatible with Domark Software and Simis Limited's Flight Sim Toolkit (FST), and support user-made games created with FST. The WEBCVS page is no longer available.
Inspiration: Flight Sim Toolkit
Technical info
Code languages: C
Code licenses: GPL-2.0
Code dependencies: SDL
Platform:
role playing clone content open
Inspiration: Five Nights at Freddy's
Developers: darkhaven3, Ian
Technical info
Code languages: C
Code licenses: MIT
Code repositories: MotoLegacy/OpenFNaF.git( since 2019, )
Code dependencies: SFML
Platform:
remake scrolling skill
Technical info
Code languages: C++
Code licenses: GPL-2.0
Platform:
remake cars racing
Inspiration: Test Drive
Developer: Anton Gerdelan
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: capnramses/opengl_test_drive_clone.git( archived, since 2014, )
Code dependencies: OpenGL
Platform: Original code released under GPL.
Inspiration: Gladiator
Developers: Jonny D, Sean Ford, Zardus
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/snowstorm/git, osgames/snowstorm.git @add( since 2019, )
Code dependencies: SDL
Platform:
game engineremakerole playing content commercial + original required
Engine remake of Gothic II.
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: Try/OpenGothic.git( since 2019, )
Build system: CMake
Platform: Open source clone of 'Heroes Of Might And Magic III' engine. Requires ownership of Heroes of Might and Magic III.
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: osgames/openhomm.git( since 2019, ), code.launchpad.net/openhomm
Code dependencies: Qt, SDL
Build system: QMake
Platforms:
remakestrategy content commercial + original required turn-based
Aims at creating content open.
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: TalonBraveInfo/OpenHoW.git( since 2017, )
Code dependencies: OpenAL, SDL2
Build system: CMake
Platforms:
strategy content open multiplayer online + LAN real-time
OpenRA mod with freely licensed pixelart building upon the unreleased [Hard Vacuum](https://lostgarden.home.blog/2005/03/27/game-post-mortem-hard-vacuum/) graphical assets by Daniel Cook.
Technical info
Code languages: C#, Lua
Code licenses: GPL-3.0
Code repositories: OpenHV/OpenHV.git( since 2019, )
Code dependencies: OpenRA
Assets licenses: CC-BY-3.0, CC-BY-SA-4.0
Build system: Make, msbuild
Platform:
music entertainment
Rhythm dancing game.
Technical info
Code languages: C, C++
Code licenses: MIT
Code repositories: openitg/openitg.git( archived, since 2011, )
Build system: Autoconf
Platforms:
arcaderemake content commercial + original required
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: AlisterT/openjazz.git( since 2014, )
Code dependencies: SDL
Build system: Make
Platform:
game engineremakesimulation content commercial + original required
Technical info
Code languages: Java
Code licenses: GPL-3.0
Code repositories: tonihele/OpenKeeper.git( since 2014, )
Code dependencies: jMonkeyEngine
Build system: Gradle
Platforms:
remake content commercial + original required
Technical info
Code languages: C#
Code licenses: GPL-3.0
Code repositories: IceReaper/OpenKrush.git( since 2018, )
Code dependencies: OpenRA
Platforms:
Technical info
Code languages: C++, C
Code licenses: 2-clause BSD
Code repositories: XProger/OpenLara.git( since 2016, )
Code dependencies: WebGL
Platform:
actionarcaderemake content open multiplayer split-screen
Liero 1.36. License information at http://www.liero.be/licenses/135/license.txt
Inspiration: Liero
Developers: Anders Höckersten, gliptic
Technical info
Code languages: C++, C
Code licenses: Custom
Code repositories: gliptic/liero.git( since 2014, )
Code dependencies: SDL
Platform: Realtime worms shoot-em-up.
Technical info
Code languages: C++
Code licenses: LGPL-2.0
Code repositories: albertz/openlierox.git( since 2011, ), git.code.sf.net/p/openlierox/code
Build system: CMake
Platforms:
remakesimulation content commercial + original required transport
The original game use the modified version of RollerCoaster Tycoon 2's engine. OpenLoco using modified version of OpenRCT2's engine.
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: OpenLoco/OpenLoco.git( since 2018, )
Build system: CMake
Platform:
arcaderemake content commercial + original required multiplayer LAN racing
Inspiration: Midnight Club II
Developers: Duncan, LRFLEW
Homepage: LRFLEW/OpenMC2
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: LRFLEW/OpenMC2.git( since 2016, )
Platform:
strategy clone content commercial + original required
Inspiration: Master of Magic
Developer: Jacopo Santoni
Homepage: Jakz/openmom
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: Jakz/openmom.git( since 2014, )
Code dependencies: SDL2
Build system: CMake
Platform:
remakestrategy content original required turn-based
See also https://github.com/mimi1vx/openmoo2, https://gitlab.com/scarabeusiv/openmoo2
Inspiration: Master of Orion 2
Developer: II9T5
Technical info
Code languages: Python
Code licenses: GPL-2.0
Code repositories: pjotrligthart/openmoo2-hg-mirror.git( since 2015, )
Code dependencies: pygame
Build system: setup.py
Platforms:
action clone
Technical info
Code languages: C++, Perl
Code licenses: GPL-2.0
Code repositories: osgames/openmortal.git( since 2019, ), openmortal.cvs.sourceforge.net
Build system: Make
Platform:
game engineremakerole playing content original required
Unofficial open source engine reimplementation of the game Morrowind. See also [OpenMW on Android](openmw_for_android.md)
Inspiration: The Elder Scrolls III: Morrowind
Developers: Alex, Alexander "Ananace" Olofsson, Alexander Nadeau, Alexander Stillich, Alexandre Moine, Alexei Dobrohotov, Allofich, Andrei Kortunov, Anton Uramer, arbitrary-dev, Artem Kotsynyak, Artem Utin, Arthur Moore, Assumeru, astillich-igniti, athile, Aussiemon, Austin Salgat, Azdul, Bo Svensson, Bodillium, Bret Curtis, Britt Mathis, cc9cii, cfcohen, Chris Djali, Cody Glassman, Cramal, Cédric Mocquillon, darkf, David Cernat, David Walley, Dmitry Marakasov, dteviot, Edmondo Tommasina, endorph, eroen, Fil Krynicki, Finbar Crago, fr3dz10, Gleb Mazovetskiy, Gohan1989, gugus, halalstuff, Hristos N. Triantafillou, Internecine, Jackerty, Jacob Essex, James Carty, Jan Borsodi, Jan-Peter Nilsson, Jason Hooks, Jeffrey Haines, Jiří Kuneš, Joakim Berg, Joel Graff, Jordan Ayers, Jordan Milne, Josua Grawitter, jrivany, Julien Voisin, k1ll, Kamil Bar, kcat, Kevin, Kyle Cooley, Lennart Bernhardt, logzero, Lukasz Gromanowski, M S, Madcow, Mads Sandvei, Marc Zinnschlag, Marco Melletti, marcrbouvier, Marek Dudek, Marek Kochanowicz, Mark76, MAtahualpa, MatthewRock, Max Henzerling, Michael Mc Donnell, Michael Papageorgiou, Michał Bień, Miloslav Číž #movingToGitLab, Miroslav Puda, MiroslavR, Mitchell Schwitzer, MocquillonCedric, Nathan Aclander, Nathan Jeffords, Nicolay Korslund, Nikolay Kasyanov, Oleg, Perry Hugh, Phillip Andrews, pi03k, Pieter van der Kloet, PL_kolek, PlutonicOverkill, Rafael Moura, rainChu, rexelion, rhtucker, riothamus, Rob Cutmore, Robert MacGregor, Rohit Nirmal, Roman, Roman Melnik, Roman Proskuryakov, Roman Siromakha, sandstranger, Sandy, Scott Howard, Sebastian Wick, Sergey Fukanchik, Sergey Shambir, sergoz, Simon Humpohl, slothlife, Sophie Kirschner, Stanislav Bas, Stanislaw Halik, Starsickle, Sylvain T, Tatrabbit, terrabyte25, Thoronador, Thunderforge, Tom, Tom Mason, TorbenC, tri4ng1e, unelsson, Xenkhan, xyzz, Yuri Krupenin, zelurker, Łukasz Gołębiewski, ⴹⅿаոuel GuéveΙ
Homepage: openmw.org/en
Media: OpenMW
Download: openmw.org/downloads
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenMW/openmw.git( since 2009, ), xyzz/openmw-android.git
Platform:
remake content commercial
See also [OpenMW](openmw.md).
Technical info
Code languages: Kotlin, Java
Code licenses: GPL-3.0
Code repositories: xyzz/openmw-android.git( since 2018, )
Build system: Gradle
Platform:
game engineremake cars content commercial + original required racing
Wants to create one engine to play the NFS series (NFS1 - NFS6). The NFS3 implementation is almost done, the others semi-playable or not implemented yet.
Homepage: opennfs.com
Technical info
Code languages: C, C++
Code licenses: MIT
Code repositories: OpenNFS/OpenNFS.git( since 2015, )
Code dependencies: Bullet3, OpenGL
Platform:
actionpuzzleremake content original required survival
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: verhoevenv/OpenNotrium.git( since 2014, )
Code dependencies: SDL2
Platforms:
actionremake content commercial (?) + open (?) + original required
single player, 2 player and network play work, content from omf2097.com
Technical info
Code languages: C, C++
Code licenses: MIT
Code repositories: omf2097/openomf.git( since 2013, )
Build system: CMake
Platform:
remakestrategy multiplayer online + LAN real-time
Mods: https://github.com/cookgreen/Yuris-Revenge
Inspirations: Command & Conquer, Command & Conquer: Red Alert, Dune 2000
Developers: abc013, abcdefg30, abmyii, Adam Mitchell, Alexander Fast, alexander-boll, Alexandre Oliveira, Alexis Hunt, Alfredo Brandau, Alli, Andre Mohren, Andrew Odintsov, anvilvapre, AoAGeneral, Arular101, atimoschenkow, atlimit8, BGluth, blackhand1001, Booom3, Braxton Williams, Carko, CH4Code, Chris Forbes, Christopher Grant, clemty, Clément Bœsch, Cody Brittain, Curtis Shmyr, Daniel Hernandez, Danny Keary, darkademic, David Jiménez, David Wilson, DeadlySurprise, Deniz, Dmitri Suvorov, dnqbob, DSUK, earthpig, epicelite, evgeniysergeev, forcecore, fruestueck, Glenn Martin Jensen, GSonderling, Gustas, Heli Aldridge, Hellhake, HenrytheSlav, Ian T. Jacobsen, Igor Popov, Inq8, Ivaylo Draganov, Jacob Dufault, Jan Beich, John Turner, Jonas A. Lind, Jonathan Ling, jrb0001, jsd1982, Kanar, Kenny Hoxworth, Kevin, Kyrylo Silin, ltem, Markus Hartung, Matija Hustić, Matthias Mailänder, MatthijsBenschop, Max Ugrumov, Micr0Bit, MorMund, Moviuro, Mustafa Alperen Seki, mvdhout1992, Nah, Neth, Nikolay Fomin, Oliver Brakmann, OmegaBolt, Orb370, Paolo Chiodi, Paul Chote, Paul van Tilburg, Pavel Penev, Pavlos Touboulidis, Peter Antal, Peter Evers, Pi Delport, psydev, r0b0v, Raymond Bedrossian, raz, reaperrr, Remco, Robert Rouhani, RoosterDragon, s1w_, Sam, Scott, sinf, Smittytron, SteelPhase, taryn, teees, teinarss, TheChosenEvilOne, Thijs Waalen, Tim M, tovl, Trevor Nichols, Tyson Liddell, UberWaffe, Unrud, Wojciech Walaszek, xan2622, yesfish, ytinasni, Zimmermann Gyula
Homepage: www.openra.net
Media: OpenRA
Download: www.openra.net/download
Technical info
Code languages: C#
Code licenses: GPL-3.0
Code repositories: OpenRA/OpenRA.git( since 2010, )
Platform:
actionremake content original required
Technical info
Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: xythobuz/OpenRaider.git( since 2013, ), openraider.cvs.sourceforge.net
Code dependencies: OpenAL, OpenGL, SDL2
Build system: CMake
Platforms:
remakesimulation content original required
Re-implementation of RollerCoaster Tycoon 2 (RCT2), expanding the game with new features, fixing original bugs and raising game limits.
Inspirations: RollerCoaster Tycoon, RollerCoaster Tycoon 2
Developers: A.N, Aaron van Geffen, Adam, Adrian Wielgosik, Albert Morgese, Alexander Overvoorde, Andy Ford, annoyingdroid, anyc, atmaxinger, aw20368, Basssiiie, Ben Johnston, Ben Pye, blackhand1001, Breno Rodrigues Guimarães, Bryan DiLaura, camthesaxman, ceeac, Chanwoong Kim, Cheetos420, Christian F. Coors, Christian Murphy, Christian Schubert, Cody Jung, Cory Sanin, CraigCraig, Daan de Heij, danidoedel, Daniel Kamil Kozar, Daniel Karandikar, Daniel Trujillo Viedma, Daniël Heres, Dennis Devriendt, Dennis-Z, deurklink, Dom Light, Duncan, DutchRPW, Dániel Tar, frutiemax, Gabriel Guedes, Gericom, GingerAdonis, Graham Edgecombe, Harry Lam, Haven Kim, Helio Nunes Santos, Hendrik v. Raven, hexdec, Hielke Morsink, hokasha2016, Hudson Oliveira, irrelevantirreverent, Jackson Davis, James, jensj12, Jeroen Sack, JeroenDStout, Jim, Jim Armstrong, Jonathan Haas, Joshua Moerman, Josue Acevedo, Julia Pinheiro, Justin Gottula, Jørn Lomax, Kane, Keatzee, Keith Stellyes, Kevin, Kevin Burke, Krutonium, Kyle Kirbatski, Leurak, Linus Unnebäck, LRFLEW, Lucas Åström, Maciek Baron, Maikel Stuivenberg, MaikelS11, Manuel Vögele, Marco Costa, marcovmun, Margen67, Marijn van der Werf, Martin Černáč, Mathias Gibbens, Matt Souza, Matte A, Matthias Lanzinger, Matthias Mailänder, Melissa, Michael Steenbeek, Michał Janiszewski, Michiel, Miso Zmiric, muemart, Mustapha Elghoul, NathanIkola, nexgenration, Nicolas Hawrysh, nightroan, Nils Caspar, Olivier Wervers, OpenRCT2 git bot, oystedal, Patrick Wijnings, Paul Sajna, Paweł Bylica, Peter, Peter Hill, Peter Ryszkiewicz, Philip Goto, Phillip Walters, pizza2004, pkubaj, platipo, Pulkit, quale, Richard Fine, Richard Jenkins, Richard Qian, Robert Jordan, Rodbourn, RollingStar, rpstester, Ruben De Smet, Rune Laenen, Saad Rehman, Sadret, Sam Horn, Sidney, Sijmen, Silent, Simon J, skdltmxn, Skip, spacek531, Ted John, TELK, TheAssassin, Thomas den Hollander, Timmy Weerwag, Tobias Kohlbau, Tom Lankhorst, Tom Parsons, Tom van der Kleij, Tomas Dittmann, TomasZilinek, Trevor Harkness, Trevor Wilson, Tulio Leao, Umdlye, Vinicius Sa, w-flo, William Wallace, wolfreak99, X123M3-256, Xkeeper, xperia64, Yannic Geurts, Yaroslav Tretyakov, YJSoft, zaxcav, Łukasz Pękalski, ζeh Matt
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenRCT2/OpenRCT2.git( since 2014, )
Build system: CMake
Platform:
Inspiration: SkyRoads
Developer: Daniel Church
Homepage: openroadsgame.com
Play online: openroadsgame.com
Technical info
Code languages: TypeScript, JavaScript
Code licenses: MIT
Code repositories: anprogrammer/OpenRoads.git( since 2014, )
Code dependencies: WebGL
Assets licenses: ?
Platform:
strategy isometric real-time
Also known as arrakis.
Technical info
Code languages: Python
Code licenses: GPL-2.0
Code repositories: osgames/openrts.git( since 2019, )
Code dependencies: PGU, pygame
Platforms:
actiongame engineremake content commercial + original required
Recreation of the classic Grand Theft Auto III game executable.
Homepage: openrw.org
Technical info
Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: rwengine/openrw.git( since 2015, )
Code dependencies: SDL2
Build system: CMake
Platform:
remakestrategy multiplayer Online + LAN real-time
Technical info
Code languages: C#, Lua
Code licenses: GPL-3.0
Code repositories: Dzierzan/OpenSA.git( since 2019, )
Code dependencies: OpenRA
Platforms:
game enginestrategy clone content commercial + original required real-time
Technical info
Code languages: C#
Code licenses: LGPL-3.0
Code repositories: OpenSAGE/OpenSAGE.git( since 2017, )
Platform: Git history was removed in 2019. Copyright problems mentioned.
Inspiration: SimCity 2000
Developer: Nicholas Ochoa
Technical info
Code languages: JavaScript
Code licenses: GPL-3.0
Code repositories: nicholas-ochoa/OpenSC2K.git( since 2018, )
Code dependencies: Phaser, WebGL
Platform: Tower simulation game.
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: fabianschuiki/OpenSkyscraper.git( since 2010, )
Build system: CMake
Platform: Online Soccer Manager
Technical info
Code languages: PHP
Code licenses: GPL-3.0
Code repositories: delight-im/OpenSoccer.git( since 2014, )
Platforms:
puzzle clone content open
Technical info
Code languages: C++
Code licenses: Unlicense
Code repositories: mdodis/OpenSolomonsKey.git( since 2019, )
Build system: Custom
Platform:
remake content commercial + original required
Homepage: ObKo/OpenSR
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: ObKo/OpenSR.git( archived, since 2011, )
Code dependencies: OpenAL, Qt
Build system: CMake
Platforms:
puzzleremake content open
Technical info
Code languages: C
Code licenses: GPL-3.0
Code repositories: sergiou87/open-supaplex.git( since 2020, )
Code dependencies: SDL2
Build system: Make
Platform:
remake content commercial + original required
Technical info
Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: OpenSWE1R/openswe1r.git( since 2017, )
Code dependencies: OpenGL, SDL2
Build system: CMake
Platforms:
game engineremake content commercial + original required
Technical info
Code languages: C++
Code licenses: MIT
Code repositories: afritz1/OpenTESArena.git( since 2016, )
Code dependencies: OpenAL, SDL2, WildMidi
Build system: CMake
Platform:
remake content original required
SVN of project is gone and Git is older than releases, take from download page maybe?
Inspiration: Titus the Fox
Developers: Eirik Stople, stople
Technical info
Code languages: C
Code licenses: GPL-3.0
Code repositories: stople/OpenTitus.git( since 2012, )
Code dependencies: SDL
Platform:
actiongame engineremake content commercial + original required
Technical info
Code languages: C, C++, Lua
Code licenses: LGPL-3.0
Code repositories: opentomb/OpenTomb.git( since 2015, )
Build system: CMake
Platform:
Inspiration: Triple Triad
Developer: Benjamin Fuu
Technical info
Code languages: Java
Code licenses: GPL-3.0
Code repositories: benjaminfoo/OpenTriad.git( since 2015, )
Build system: Gradle
Platform:
actionremake shooter
Technical info
Code languages: C
Code licenses: GPL-2.0
Code repositories: opentyrian/opentyrian.git( since 2020, )
Code dependencies: SDL
Platforms:
game engineremakerole playing content commercial + original required
Technical info
Code languages: C#
Code licenses: MIT
Code repositories: MaKiPL/OpenVIII-monogame.git( since 2018, )
Code dependencies: MonoGame
Platform: Manage a virtual fantasy football (soccer) team and play with it against other users.
Developer: Ingo Hofmann
Technical info
Code languages: PHP
Code licenses: LGPL-3.0
Code repositories: ihofmann/open-websoccer.git( since 2014, )
Platform:
action clone content open
Inspiration: Yandere Simulator
Developer: HardlyACoolPerson
Technical info
Code languages: C#
Code licenses: GPL-3.0
Code repositories: Evilpersonwithnosoul/OpenYandere.git( since 2018, )
Code dependencies: Unity
Platform:
strategy turn-based
A WWII, turn-based platoon, company level war game on the Eastern Front.
Developer: Kalman Andrasi
Homepages: kursk.sourceforge.net, kursk
Download: kursk/files
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code repositories: osgames/kursk.git( since 2018, )
Platforms:
remake content open
Homepage: opmon-game.ga
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpMonTeam/OpMon.git( since 2017, ), OpMonTeam/OpMon-Data.git @add( since 2018, )
Code dependencies: SFML
Assets licenses: CC-BY-SA, CC-BY
Build system: CMake
Platform:
arcade clone
Inspiration: SkyRoads
Technical info
Code languages: C++
Code licenses: GPL-2.0
Code dependencies: OpenGL, SDL
Platform:
Inspiration: Log!cal
Developer: Björn Nilsson
Technical info
Code languages: JavaScript
Code licenses: GPL-2.0
Code repositories: bni/orbium.git( since 2010, )
Platforms:
Technical info
Code languages: Java
Code licenses: GPL-3.0
Code repositories: fynnfluegge/oreon-engine.git( since 2015, )
Build system: Maven
Platform: Prototype for an educational role-playing game for intercultural education.
Developer: Michael Kriegel
Technical info
Code languages: C#, Java
Code licenses: GPL-2.0
Code repositories: osgames/orient.git( since 2018, )
Build system: Visual Studio, Ant
Platform:
Inspiration: Bolo
Developer: Stéphan Kochen
Technical info
Code languages: CoffeeScript
Code licenses: GPL-2.0
Code repositories: stephank/orona.git( archived, since 2010, )
Platform:
Inspiration: Joust
Developers: dulsi, Rémi Verschelde
Technical info
Code languages: C++
Code licenses: GPL-3.0
Code repositories: dulsi/ostrichriders.git( since 2016, )
Build system: Make
Platforms:
music clone content open
See also: https://github.com/itdelatrisu/opsu, https://github.com/fluddokt/opsu, https://github.com/AnirudhRahul/opsu-Android
Inspirations: Beatmania IIDX, Osu! Tatakae! Ouendan, Taiko no Tatsujin
Developers: Adonais Romero González, Aergwyn, aitani9, Akash Mozumdar, Albert Tang, Albie, Alchyr, Alex Amadori, AlFas, alula, Andrei Zavatski, andy, anellie, Angela Zhang, apollo, BananeVolante, Bartłomiej Dach, Berkan Diler, BlauFx, Charlie, Christian Kamphausen, Christine Chen, ckie, clayton, Craftplacer, Damnae, Dan Balasescu, David Zhao, Dean Herbert, default0, Derrick Timmermans, Desconocidosmh, Dragicafit, Drew DeVault, Drezi126, DTSDAO, ekrctb, emu1337, Endrik, Fabian L, Fabian Lindgren, Fire937, Firmatorenio, frankhjwx, FreezyLemon, Fukashi13, Gabe Livengood, Gagah Pangeran Rosfatiputra, Ganendra Afrasya, Grrum, Hanamuke, Henry Lin, HoLLy, Huo Yaoyuan, ilsubyeega-desu, Ivan Pavluk, Jack Boswell, Jack Lee, Jack Scotson, JackLee9355, Jacob, Jacob Odgård Tørring, Jai Sharma, James58899, Jamie Taylor, Jan Jurzitza, Jarosław Zgierski, Jesse Myers, Jessica Meng, Jihoon, Jihoon Yang, JimmyC7834, John Neijzen, jorolf, Joseph Madamba, Joseph-Ramos-CMU, Justus Tumacder, jvyden, Kaleb, kamp, Keijia, Kelvin, KoziLord, kyekiller, Kyle Chang, Laica, LastExceed, Leon Gebler, Liam DeVoe, LiangXiang Shen, Lucas A., Maciej Sołtys, MafinBoy, Malox10, Marco Stephan, MATRIX-feather, Max, Max Hübner, MBmasher, McEndu, Mikal Stordal, MillhioreF, miterosan, Morguldir, Moritz Bender, n4b3l, Nabile Rahmani, Naeferith, naoey, Nathan Alo, Nathan Du, Naxess, nwabear, ocboogie, odgaard, Olle Kelderman, Opelkuh, Owen Young, Pasi4K5, Patrick Andersson, Paul Teng, PercyDan, phos, Piotrek Brzeziński, Poliwrath, Power Maker, Poyo, ProgrammaticNajel, ProTheory8, qwewqa, recapitalverb, RedMindZ, rednir, Remie Richards, RizonFTW, Robin Avery, Ron B, Ronnie Moir, RORIdev, roridev, Ryan Zmuda, Salman Ahmed, Samuel Cattini-Schultz, Samuel Huang, Santeri Nogelainen, Sebastian Krajewski, Seth, Shane Woolcock, Shawdooow, Shivam, StanR, su, Sunghwan Bang, Susko3, Swords, tgi, TheOmyNomy, ThePyrotechnic, Thomas Müller, Thomas Tan, Tim Nolte, Tim Oliver, Tom Arrow, TPGPL, Tyler, UselessToucan, Vidalee, Viktor Rosvall, Vincent Maggioli, VINXIS, Vladimir Pavlov, voidedWarranties, vperus, wildtree, Willy Tu, Xexxar, Yao Chung Hu, Инсур
Technical info
Code languages: C#
Code licenses: MIT
Code repositories: ppy/osu.git( since 2014, )
Code dependencies: .NET
Platform:
role playing multiplayer online + massive
Mainly a client to connect to Eternal Lands? Was described at https://en.wikipedia.org/wiki/Eternal_Lands#Spin-offs but not included on that page anymore.
Technical info
Code languages: C, C++
Code licenses: Custom
Code repositories: jp8900308/other-life.git( since 2015, ), gregoryfenton/other-life.git @add( since 2012, )
Platform: Play as a colonist on a new planet with your new husband.
Technical info
Code languages: Ren'Py
Code licenses: GPL-3.0
Code repositories: qirien/personal-space.git( since 2012, )
Code dependencies: Ren'Py
Platform:
strategy space
On-line strategy game which takes place in the dangerous universe. See also https://github.com/Lukc/ospace-lukc, https://github.com/mozts2005/OuterSpace, https://github.com/OuterDeepSpace/OuterDeepSpace
Homepage: ospace
Technical info
Code languages: Python
Code licenses: GPL-2.0
Code repositories: ospaceteam/outerspace.git( since 2012, ), svn.code.sf.net/p/ospace/code
Code dependencies: pygame
Platform:
remakesimulation content commercial + original required
Technical info
Code languages: C++
Code licenses: 3-clause BSD
Code repositories: OutpostUniverse/OPHD.git( since 2018, )
Build system: Make
Platforms:
Homepage: elnormous/ouzel
Technical info
Code languages: C, C++, Objective-C
Code licenses: 2-clause BSD
Code repositories: elnormous/ouzel.git( since 2015, )
Platforms:
arcade content open space
Player controls a spaceship and fights against the gods that rule the universe.
Developer: Linley Henzell
Technical info
Code languages: C
Code licenses: GPL-2.0
Assets licenses: ?
Platform: https://github.com/xrOxygen/xray-oxygen is gone
Technical info
Code languages: C++, C
Code licenses: Apache-2.0
Code repositories: i-love-kfc/xray-oxygen.git( since 2021, )
Build system: Visual Studio
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