RollaB is a Monkey Ball style game that sees you rolling a ball through a 3D landscape, collecting starts along the way, by tilting your phone (accelerometer based controls). It's been published by Kajak Games, but was developed by students from Kajaani University in Finland and was the winning entry in a game development competition.

As a prize for winning the competition the development team (Aapo Lehikoinen, Joonas Alhonen, Janne Haapala and Olli Lahtinen) received a Nokia Lumia 800 and a trip to the Games Developer Conference, which is being held in San Francisco later this year.

The game has nine regular levels, with an additional three bonus levels that can be unlocked by collecting puzzle pieces from the main levels. The first couple of levels are relatively easy, but the subsequent levels get progressively more and more difficult and there's a time limit that you need to keep inside.

The video below gives you a quick look at RollaB in action.

RollaB can be downloaded from the Windows Phone Marketplace. It costs £0.79 / €0.99 / $0.99.