The ever-so popular controls for an average PC game, most likely a First Person Shooter. The only 4 keys to contest the almighty reign of the Arrow keys. Apparently, some people want to put an end to it. Screw them.
Use W to move forward.
Use A to move left.
Use S to move back.
Use D to move right.
And no matter how many times it's said, it's still there in the tutorials.