Wonder how many mutuals have also played Fract OSC, Soundodger+, Proteus, Ouenden/Elite Beat Agents, Rock Band/Guitar Hero, Rhythm Heaven, Electroplanton, any/all of the Bit.Trip games, Super Hexagon, The Impossible Game, Every Extend Extra Extreme, Lumines, Amplitude and/or Frequency, Beat Hazard, Crypt of the Necrodancer, Audiosurf, or Superbrothers: Sword & Sworcery EP
Those are just the ones that came to mind. I certainly have a type lol