Binary package “criticalmass” in ubuntu intrepid
Shoot-em-up a la galaxian
criticalmass, aka critter, is a shoot-'em-up in the style of Galaxian with
very colorful and smooth graphics (provided that you have 3d acceleration)
Note: criticalmass uses OpenGL, and will probably not run well if you do
not have a 3d accelerator which is supported by X.