Pool! is a free fun 8-ball Pool game that features realistic ball movement physics and allows you to play either against a friend or the computer. Pool! is very simple to play. You must pot either all the spots or stripes depending on who sinks the first ball. When you've cleared all of your balls, you must finish on the black. To aim your cue, you must align the line of trajectory where you want to hit the ball. A second line of trajectory will show you where the target ball will travel after being struck. Unfortunately, there are no tournaments or virtual opponents apart from the generic CPU to play against although you can play against friends. There's not much more to Pool! than this but it's the addictive nature of the game and skill involved that makes these games popular on Mac.