On June 15, TiltnTwist will launch Snowboarding TnT, an iPhone snowboarding game with a twist. That’s literally a twist – in addition to the steering controls, which have you tilting your iPhone (or iPod Touch) left and right to command your boarder, you’ll twist the device forward to perform front flips.

Apple appears to be working on an activity sensor similar to the Nike+ iPod sport kit geared towards skiers, snowboarders and mountain bikers that would be capable of determining their “air time,” “speed,” and the amount of ”power” or energy absorbed during those sporting activities.