Earlier this month, along with the CNN app for tablets, Google demoed 2 3D games that utilized both of Tegra 2's CPU cores - Monster Madness and Great Battles. The former of these games, Monster Madness, just quietly crept into the Android Market with a hefty $10 price tag. The price of 2 Starbucks coffees is a bit steep for a game, but not unheard of.
So, what does Monster Madness offer you? Zombies, upgradeable weapons, power-ups, destructible worlds, and great 3D graphics, powered by Unreal Engine 3. Not a bad package at all, don't you think? Additionally, local co-op mode via Wi-Fi means you can gang up on those monsters with your friends who can jump in and out of the game as they please.