The maze runs itself. A pac-man works its way round the dots and you are on the other side of it for once, with nothing to steer and no ghost to move. What you have instead is a gesture: draw the pac-man symbol anywhere on the screen and the drawing is the attack.
It takes a few tries before the shape reads reliably, and that is the game. You are learning to make a clean stroke under pressure while something you cannot control eats its way across the board. It came out of a game jam and it is the length of one, which is exactly long enough for the joke to land.