updates and an addition

games/strategy/_toc.md

@@ -33,7 +33,7 @@
 - **[Corsix Theme Hospital](theme_hospital.md)** (Lua, C++, MIT, mature)
 - **[Crimson Fields](crimson_fields.md)** (C++, GPL-2.0, mature, inactive since 2010)
 - **[Crown and Cutlass](crown_and_cutlass.md)** (C++, Custom, beta, inactive since 2009)
-- **[Dark Destiny](dark_destiny.md)** (Java, Javascript, mature, inactive since 2016)
+- **[Dark Destiny](dark_destiny.md)** (Java, Javascript, GPL, mature, inactive since 2016)
 - **[Dark Oberon](dark_oberon.md)** (C++, GPL-2.0, mature, inactive since 2009)
 - **[Devana](devana.md)** (PHP, zlib, beta)
 - **[Duel Commander](duel_commander.md)** (C, GPL-3.0, beta, inactive since 2009)
@@ -41,7 +41,7 @@
 - **[Dune II - The Maker](dune_ii_the_maker.md)** (Java, MIT, beta)
 - **[Dune Legacy](dune_legacy.md)** (C++, GPL-2.0, mature)
 - **[EPOH](epoh.md)** (JavaScript, MIT, beta)
-- **[Endgame: Singularity](singularity.md)** (Python, GPL-2.0, beta, inactive since 2010)
+- **[Endgame: Singularity](singularity.md)** (Python, GPL-2.0, beta)
 - **[EternalWinterWars](eternalwinterwars.md)** (Java, MIT, beta, inactive since 2014)
 - **[Evil Cult](evil_cult.md)** (Haxe, JavaScript, GPL-3.0, mature)
 - **[FAR Colony](farcolony.md)** (Pascal, GPL-3.0, beta, inactive since 2014)
@@ -158,6 +158,7 @@
 - **[XSera](xsera.md)** (C, Lua, MIT, beta, inactive since 2010)
 - **[Xconq](xconq.md)** (C++, GPL-2.0, mature, inactive since 2005)
 - **[Xenowar](xenowar.md)** (C, C++, GPL-3.0, mature, inactive since 2014)
+- **[Zero Ballistics](zeroballistics.md)** (C++, MIT, mature, inactive since 2013)
 - **[Zero-K](zero_k.md)** (Lua, GPL-2.0, mature)
 - **[Zetawar](zetawar.md)** (Clojure, MIT, mature)
 - **[Zone of Control](zone_of_control.md)** (Rust, Apache-2.0, beta, inactive since 2017)

games/strategy/dark_destiny.md

@@ -5,8 +5,10 @@ _Turn-based online space strategy game playable in internet browsers._
 - Home: http://www.darkdestiny.at/, http://www.thedarkdestiny.at/portalApp/#/, https://sourceforge.net/projects/darkdestiny/
 - State: mature, inactive since 2016
 - Keywords: MMO
-- Code repository:  https://svn.code.sf.net/p/darkdestiny/code/ (svn)
+- Code repository: https://gitlab.com/osgames/darkdestiny.git(mirror), https://svn.code.sf.net/p/darkdestiny/code/ (svn)
 - Code language: Java, Javascript
+- Code license: GPL
+- Assets license: Custom (artwork can be freely used for modification and sharing)
 
 See also https://sourceforge.net/projects/darkdestinytools/
 

games/strategy/singularity.md

@@ -3,7 +3,7 @@
 _A simulation of a true AI_
 
 - Home: http://www.emhsoft.com/singularity/
-- State: beta, inactive since 2010
+- State: beta
 - Download: (see home)
 - Keywords: SP
 - Code repository: https://github.com/singularity/singularity.git

games/strategy/zeroballistics.md

@@ -0,0 +1,15 @@
+# Zero Ballistics
+
+_Zero Ballistics is a unique blend of first person shooter and tank combat, focusing on multiplayer gaming exclusively._
+
+- Home: http://www.zeroballistics.com/, https://sourceforge.net/projects/zeroballistics/
+- State: mature, inactive since 2013
+- Download: https://sourceforge.net/projects/zeroballistics/files/
+- Platform: Windows
+- Code repository: https://gitlab.com/osgames/zeroballistics.git (mirror), https://sourceforge.net/p/zeroballistics/code/HEAD/tree/ (svn)
+- Code language: C++
+- Code license: MIT
+
+## Building
+
+- Build system: CMake