Kuuasema has Supersonic HD (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $1.99) for a limited time.

Supersonic HD is an adrenaline-charged, music-driven 3D ride game. Blaze through radiant neon racing circuits at ever faster speeds, accompanied by electronic beats from Finnish artist collective Kitkaliitto. The ultimate challenge comes in the 30-second Blitz mode with speed boosts, time extends and other special collectibles.