Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Java RTS framework
A space race game in the style of A Dark Room
A snarky 2D management game about building and running a dungeon.
An adaptive skirmish AI for Warzone 2100.
A fantasy real time multiplayer strategy game with player scripted AI
A game engine in java for 2D strategy games
Wrote in c++ and using SDL. V0.02a
Programming-game written in Lua