As seen at the Boulder Sphero Hackathon!
A pass-and-play game that is similar to the basketball game "Horse" you used to play when you were a kid (or maybe still play...).
Grab a friend with a Sphero and set one up as a "driver" and the other as the "target" (Note: You will need two (2) Spheros to play this game). Drive the driver Sphero into the target Sphero as fast as possible and see if your friend can do better. Whoever the slower driver is gets a letter. First one to spell SPHERO loses! Increase the difficulty and fun of the game by "calling your shot" first. For example, "drive under the chair and around the table before hitting the target."
This app is an easy (and free!) way to add some friendly competition to the already fun Sphero robots.