Best iPhone apps this week
Downhill Xtreme £free
Nothing says 'extreme' like a carelessly discarded letter. This fast-paced title sees you step into the shoes of a daredevil longboarder, whose clear disregard for the safety of his bones and organs results in whirlwind races for glory. Lush 3D graphics with lighting and shading effects make for some lovely scenery. Not that you'll have time to enjoy it of course.