Built this summer 2009 for Brooklyn Workshop’s awesome FreeRider SkateCycle. Skate Test Dummy is a 3d physics based sandbox game. You tilt the phone to gather momentum until you can jump out of the sides of the bowl and pull different tricks in the air. It’s complimented by great DJ scratching sound effects by Tim K.
The biggest challenge was tuning the physics to feel natural. Unity 3D’s built in physics system is great but from time to time a safe landing would result in a wipeout. Eventually I wrote my own physics system and the extra effort produced much smoother results.
Pardon the pixels, iPhones were a lot slower back then!