I have played this game on a Wii and it good and perfectly playable, however on pc you just can't react fast enough with a mouse or gamepad [though I think a graphics tablet might work for some bits, being the closest you can get to the Wii controller on a pc, I'm not going to wear my tablet out playing this piece of badly designed rubbish] to be able to play the games. Some are do-able, though they leave you wanting to apologise to your mouse for mistreating it trying to move it fast enough to win, but others are a nightmare that are near impossible to play. It might be easier if you could have a choice of controller but you can only access the options menu when you first start the game, you lose all progress if you try to go back to it from within the game, very annoying.
Generally a version that should never have been released without substantial alterations, play on a Wii or the mobile phone version which has been changed to a classic platformer if you want Rabbids not this disaster of gaming design.
On a different note if you actually do want to buy it you might want to know that it works fine under Windows 7 as well as XP.
Check the price, you get what you pay for, cheap rubbish in this case.