I'll throw out a few things depending on how you look at the word fast...

JD (set up RIGHT and MEAN) are fast in the way that the ball gets back to your flippers really quickly.

IM is fast in both play time and how quickly the ball navigates the loops and whatnot.

DM is fast in the way that you can keep hitting stuff on the fly if you are playing really well and just keep looping and looping the ball.

VND is fast in the way that you can get the balls moving so fast you can't react. It's my favorite pure speed game which makes it one of my favorite games period - again, if it is set up right, otherwise it's absolutely terrible. The key is the four GLo-Balls it uses are the same weight as a TZ Powerball, so they move FAST, the ramps and orbits are made to return the ball to the flippers super fast, and the targets are designed to bounce the ball straight back to the flippers. I love this game - I need to get mine back from where it is loaned!!