http://itunes.apple.com/app/sluggo-planet-eating-space/id514347605?mt=8

Welcome to Sluggo, a true universal app!. A game where you guide a planet eating space worm through solar system after solar system.

The rules are simple. Eat the planets from smallest to largest and then eat the sun to create a wormhole to the next solar system.

Also while you’re at it be sure to eat all of the comets flying around. Some cause harmful radiation rings by hitting the sun.. others offer temporary positive effects, such as stop time, invincibility and gravity well.