Zombies Tsunami is an endless running game, in which players need to control a group of zombies to keep running. But one point you need to know is that the number of your zombies depends on how many people the zombies eat.
Beginning with a single zombie running through the streets, chase down the living and add them to your zombies group. The more people you bite and add to your group, the longer the Zombie Tsunami can charge across the planet, eating everything in its way.