WADS, Arrow Key or Mouse To Move.

EG Zombies City is the place where you will build your zombie city and attack other zombies, Zombies City is the arcade category game tending, one of the most addictive game, the mission here is to gather people around, just become zombies to be a part of your.
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For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL