Commonplace

Jetpack Joyride

Halfbrick studios

Canabalt, but addictive. A one-button infinite runner with a fantastic achievement/style system, that only gives you three goals at a time, and rewards you significantly for meeting them. This leads to content rewards - new outfits, new jetpacks, gadgets that change gameplay. Surprising longevity, though I did get tired of it. Alleson kept at it longer than I did.