Endless Sky is a sandbox-style space exploration game
A 2D Real Time Strategy space combat game.
Arianne is an engine to develop multiplayer online games like Stendhal
Cross-platform real-time strategy game (3D)
oGame-like browser space realtime strategy game based on xNova
Simple animation of a journey at light speed
A space race game in the style of A Dark Room
3D Space Drone Battle Simulator
Babylon 5 in Homeworld 2!
Free strategy browsergame engine.
Unique web based space strategy game written by Andras Nemeth
A WIP space combat game
the open source browser strategy game
PHP Multiplayer Chess Script
Programming-game written in Lua