Quick and painless review: there are zombies; you're not a zombie; kill all the zombies that want to eat you.
As far as controls go: again, very simplistic. Aiming and shooting takes a few minutes, but is otherwise very logical and works well. The touch-drag-and-drop for ammo reload concept often wastes time, though, as shots are fired off to the side of the screen (or you continue to shoot an unloaded weapon while swearing at the DS) leaving the player wide open for a royal trouncing. Multi-player is as it does: local wi-fi is seamless, but, man, would I love me some online! Minimal bonus features also have that strapped-on feel.
All in all, this gives what it should: frenetic pacing allowing players to shoot zombies with minimal storyline. To boot, it's pocket sized, and on the same system Mario and the good Princess have graced. For a developer that hasn't published anything big yet (as much as I love any game with 'Nutz' in the title...), this is a great stab into gaming. Worth the thirty dollar investment for zombie fans, 20-25 for the rest.