This is the breakdown of the Bit Gen games as I recall:
Skip:
Boundish, Coloris, Dialhex, Dotstream, Orbital, Soundvoyager
Q-Games:
Digidrive
So the total is actually 7, of which I own 4 (Digidrive, Dotstream, Orbital, and Soundvoyager). Boundish is based on Pong I think, with Coloris and Dialhex both being puzzle games. Of the 4 I own, Orbital's probably the best, but they're all cool in their own way.