Needs 3 players with xbox360 controllers.
Use Dpad to move character (big orb).
B or LB = eat & dump

Go near small orbs with same primary color, corresponding secundairy color or brown color to assimilate (the little ones will follow you afterwards)
You can 'eat' the other colors by pressing B or LB on your joypad. This will produce a splash that will change the colors of the little orbs. Move near your homebase to drop your balls and collect points (points don't work now due to segfaults).
Come near another player and your balls will scatter, but if you're carefull you can manage to devour some of their balls.