Though its title first brings to mind tower defense, Snops Games' recently released Xbox Live Indie Game Snops Attack! Zombie Defense is actually a vertically scrolling shoot-'em-up -- and a fine-looking one, too!

Scoring is Snops Attack is chain-based, and players can rack up several-thousand hit combos throughout each level by blasting waves of undead critters. The game also boasts a unique "edge of death" mechanic, in which you're awarded a score multiplier when all of your shields are depleted.

Snops Attack! is priced at 240 Microsoft points ($3).