In theory, they should learn how to avoid hitting each other over time. I've not really tested it properly thought.
'F' makes new AiCubos follow "the leader".
'L' makes you the leader (Shift, Alt, and control, make something else the leader)
'Tab' switches player.
'G' (and shift-G) toggles gravity
If the .app (Mac) or .exe (windows) executables don't open, try the .jar file instead.