Termite

Termite is the ultimate psychedelic real-time action strategy experience. You are the leader of a termite hive with three objectives :

collect food
produce ants
destroy alien colonies
Select groups of termits, order them to collect food or attack aliens, use the speed slider to slow down/speed up time to have more control over your ants.

With Termite you get :

31 levels of intense action and mass destruction
Random scene generator
Tons of particles
Voxel system based minimal design

Termite is open-source, feel free to learn how to write muti-platform C games at https://github.com/milgra/termite