It'd be unfair to call it rubbish...
The games graphics were okay, nothing amazing, the gameplay involves doing something that you've had to do many a time in loads of other minigames and arcade games, and it doesn't do it particularly well either, but what the heck, it's the only free game available in the UK on the whole of the Xbox Marketplace (if there are any others, please PM me), and you can't expect much for nothing can you?
All I'll say is, don't expect to keep this game on your hard-drive to play again once you've already played it through once... It's just not going to happen. I respect whoever created it, because I could never manage to create a game, however it's nowhere near the likes of many other OK games on XBLA.