The latest version of Zombie Derby 2
You should also try Zombie Derby Pixel Survival.
Controls: Left Shift is for Nitro, Spacebar to Jump, Arrows to drive.
Always check Garage after every drive to view what upgrades you can afford with the money you managed to earn.
Upgrades are very necessary for this game, you cannot pass many zombies without the proper upgrades. The game comes with cool 3D graphic.
If you haven’t tried Earn to Die, you must. I am recommending it because that game is quite similar.