The Convoy game challenges users to drive through zombie-infested Las Vegas, killing attacking zombies as they pick up survivors and critical supplies like fuel, armor and guns. Users choose other players' vehicles to form a Convoy in order to improve their chances of survival - those who choose wisely and have a sharp-shooters eye can sit atop the leaderboard.
With some great first person shooter graphics, the game is age-gated (you have to be 18 years old).
