Battle for Wesnoth. MegaGlest. A free, open-source game of ancient warfare. Spring. Spring RTS Engine. Warcraft-like : Glest. Strategie : Bos Wars. About - UFO:AI. General It is the year 2084.
You control a secret organisation charged with defending Earth from a brutal alien enemy. RTS / Puzzle multijoueurs : Bontago. Colone CivilisationII : Freeciv (Open source) RTS Warzone 2100 (GPL)