Zombies are trapped in barbed fences, which you swipe to move. When two fences containing the same number of zombies collide, they will combine into one tile, trapping zombies from both fences. The number of zombies will double with each merge, from 2 to 4, 4 to 8 etc… until you double two 1024 tiles into one 2048 tile, which is the goal. A new tile fence containing either 2 or 4 zombies appears with each swipe, which will occupy one more tile on your board. You must make each move count, to prevent the board from filling up with zombies before reaching 2048. If you reach the 2048 goal, you can keep playing. An even more difficult challenge would be getting the 4096 tile! It’s possible. The game ends when there are no moves left.
A good strategy seems to be keeping everything on one side as much as possible. For instance, if you swipe tiles left, right and up, avoid swiping any down until you have to. Or if you swipe up, down and right, avoid left moves.
2048 Zombies gameplay was inspired by, but has not connection with, Gabriele Cirulli’s 2048 strategy puzzle game, available online.