Ubisoft has revealed what can now be described as a rival to Microsoft's Project "your-body-is-the-controller" Natal with a new fitness game that tracks body movement.

Although only for one title so far, the "Your Shape" game, comparisons between Ubisoft's camera-based system and Xbox's concept control method will be inevitable.

"The new camera for the Wii and our 'Body Tracking' technology means 'Your Shape' will offer an experience that is a breakthrough in gaming, as well as in the fitness category", said Yves Guillemot, CEO, Ubisoft.

Hit play now on the demo video above to see the new game in action, and we'll bring you more news on "Your Shape", as well as Project Natal, as we have it.