Zombie Swarm

Survive waves of Zombies, there are unlimited waves with the option to complete the game by saving up to 150,000 points. You can upgrade your weapons, health and buy ammo.  

There are instructions in the game in case you get confused. The main aim is to really save up to 150,000 points to win the game, however you have a choice to beat the game at a higher wave, do it at your own risk.