Snood doesn't force a time limit on players between shots, making it more appealing to the older crowd than Puzzle Bobble (aka Bust a Move).
I don't play either (not anymore, anyway) but I figured I'd grab it because A) I've never seen it anywhere before and B) Snood on the DS for $10? Sure, why not.
Maybe I've seen a different side of it, as I spent my college days being hearing about how professors had basically lost their wives to Snood.
-SB