Regress to the 1980s with this light-hearted "retro" arcade game.
Alien monsters from outer space were happily minding their own business until you turned up and, like an idiot, you started bashing them on the head with a shovel.
Inexplicably they became a bit tetchy and have decided to eat you.
Consequently, your only chance of survival is to dig holes in the brick floors into which the monsters will become trapped and then bash them repeatedly until they fall through.