This game is less a distraction from revision, and more a lifestyle choice- there's nothing better than kicking back to Puzzle Bobble after a hard day's TV watching, especially when you've been watching Supermarket Sweep, Dale Winton- who wouldn't want to sweep his aisle?
Well I wouldn't actually.
Anyway, I love this game, I've been playing for months, still haven't got beyond level 16 though, give it a whirl. And don't worry, it's not actually that puzzling...
http://www.thegameblazer.com/puzzlebobble.php