Game & Watch: Vermin

Vermin is a DSiWare game based on the Game & Watch LCD toy of the same name. You play as an exterminator who is preventing an invasion of moles. Moles can pop up from five different places, and it's up to you to position your hammers above them so that they'll get whacked when they pop up. You'll need to watch their tunnelling to figure out where they'll pop up from next.

You score one point for each mole that you whack. If a mole pops up and you don't hit it, you'll score a miss. Unlike most Game & Watch games, it's not possible to clear your misses in Vermin. When you reach three misses, the game is over.