The Game isn't soley FPS! You're in the Rabbid's prison, and you have to complete various challenges to gain the Rabbids respect. So the Game is comprised of 700 different game challenges as stated by Michael Ancel, Head developer of Ubisoft Paris on Rayman Raving Rabbids.
It is a big adventure, but in a new way. It isn't like 700 minigames, it is like 700 games modes. There is the FPS type challenges, Dancing Elements, Jumprope (as seen above), Juggling, Racing, Platforming, etc.
AWESOME! I especially like the one of Rayman leading the Rabbids in some sort of disco... thing. (You're looking at a huge Rayman fan) I agree with Kaps. Rayman Raving Rabbids will be my first Wii buy, other than the Wii itself. I just saw the videos (Incredibly useful Scientific Facts) on raymanzone.com, and I fell off my chair laughing.