About GRAVEYARD SHIFT

Hold a foggy, burning industrial district against waves of infected with a pistol, a shotgun and a flickering flashlight.

On a computer: WASD move, mouse aim, click shoot, R reload, 1-2 swap, Shift sprint, F light
On a phone: Left stick move, right drag aim, tap fire, buttons reload and swap

Hawk described this game in a sentence on OhMyGames and the AI built it. You can make your own the same way, free to start.