It sounds unlikely, but somehow has made it through the App Store vetting process. This arcade game has you as a single sperm cell fighting your way to an egg. It has three phases that require you to shake, tilt and multi-tap your iPhone or iPod touch. It's $1.

Don Bluth's Banjo the Woodpile Cat Adventure Game

Remember classic laserdisc arcade games like Space Ace and Dragon's Lair? is a bit like that--in fact, it's the same animators and producers as those other games. It costs $2.

GeoDefense

is priced at $1. It's a tower defense game with a twist--it uses retro graphics that look like they were pulled from a vector based arcade game. It sports 30 different maps and lots of different weapons, five tower types with seven levels each and more.