Bos Wars is a free futuristic real time strategy game. It is cross platform and features single player and multiplayer gameplay. The point of the game is to destroy your enemies while building up your war economy. You need to pump resource magna that you can get through hot spots. Like in other RTS games Bos Wars has the fog of war. You need to explore what is beyond it with your units. There is no research for buildings so that you can start construction right away. Check out their website below.
Bos Wars site.