300Bowl, is a fun bowling game that you can play in as little as 5 minutes, but that you will keep on coming back to over and over. The graphics are great, and the sound effects add to a real bowling alley experience. You can either play against the computer (warning, the computer is pretty good), or versus a second player.
The developer of the game is listed as "The Way", but further searches uncover the true authors as "Spicy Clam", makers of "iDartz" and "TankBusters". The price for the app is now $1.99 which i think is reasonable for an app of this quality. My only complaint on the app is that i seem to have lost the sound -- but that could very well be my iPhone. Further investigation is necessary.