PBEM Game engine which is used to create many different strategy wargames today and for the past decade.
Game engine? Implementations?
See also:
[Atlantis Little Helper](https://sourceforge.net/projects/alh/), [Dev group](https://web.archive.org/web/20201214185644/https://groups.yahoo.com/neo/groups/atlantisdev/info), [Atlantis 1.0](https://github.com/ennorehling/atlantis).
https://github.com/essenbee/atlantis, https://github.com/AtlaClient/AtlaClient
Flare (Free Libre Action Roleplaying Engine) is a simple game engine built to handle a very specific kind of game: single-player 2D action RPGs.
See also [Get Involved](https://flarerpg.org/get-involved/).
Game engine and a game development platform.
See also:
[University of Illinois/NCSA Open Source License](https://github.com/OctaForge/OF-Engine/blob/master/COPYING.md)
Cross-platform application framework.
Not a specialized game framework, but one could write games with it.
See also the [Qt Creator IDE](https://wiki.qt.io/Qt_Creator).
Stable platform for various types of gameplay settings in a voxel world.
Not sure if it's a game, a game engine/framework or a graphical/scene framework.
A framework for turn-based 4 X's game (eXplore, eXpand, eXploit, eXterminate). Designed for long games, supporting massive universes and has an easily expanded tech tree.
Should this be a game engine instead? Server is written in C++. Client is written in Python.
Game engine for creating electronic versions of traditional board and card games.
Quite a few [VASSAL modules](http://www.vassalengine.org/wiki/Category:Modules).
https://git.code.sf.net/p/vassalengine/listbridge, https://git.code.sf.net/p/vassalengine/site, https://git.code.sf.net/p/vassalengine/site-src, https://git.code.sf.net/p/vassalengine/vassal4-demo
First-person space trading and combat simulator.
See also [VegaStrike Developer Tools](https://sourceforge.net/projects/ppueditor/?source=directory)
and [VSMap3D](https://sourceforge.net/projects/vsmap3d/?source=directory).
frameworkremakecontent commercial + original requiredengine recreation
Reimplementation of BioWare’s Aurora engine (and derivatives) as used in their 3D games, beginning with Neverwinter Nights.
Requires original game data.