In Tiny Epic Zombies, survivors are always on the run, collecting weapons, killing Zombies and working toward completing objectives. Completing 3 objectives can win you the game but if you're too focused on the objectives, the Zombies will overrun the mall and that will be the end of you.
Based on the mode of play, you will either play as one of the Survivors or as the Zombies.
Tiny Epic Zombies has 5 play modes including competitive and cooperative play.