Mr. Do! is a 1982 arcade maze game developed by Japan’s Universal Entertainment. The star is a circus clown named Mr. Do, who digs tunnels in an underground maze, collects cherries, and avoids or defeats red dinosaur-like monsters chasing him. Players dig paths strategically, use falling apples to crush enemies, or deploy Mr. Do’s "power ball" to beat monsters. The goal is to score as many points as possible; you can clear levels by collecting all cherries, defeating all monsters, spelling "EXTRA", or finding hidden diamonds.