I'm at work so I don't have my person list, but there is a list of driving games and their controls floating around (check the driving & racing cab section). My point is, if you haven't already, you can make a list of all the driving games and see what their controls are and then go from there. For my personal needs, I only went with a gas pedal. My main desire is to play Super/Championship Sprint. Since that game only uses a gas pedal it made my decision rather easy. In addition to the Sprint games there are a bunch of other games that only have or need a gas pedal. I grappled with the idea of a shifter too, but decided to skip it for my build. Again, I don't have the list in front of me, but I suspect that if you went with a Gas/Brake and Shifter combo, that you'll be able to play the vast majority of driving games.