Mr. Do! was released circa October 1982 by Taito. The game was developed by Universal. Mr. Do! is platform puzzle game.

The object of Mr. Do! is to score as many points as possible by digging tunnels through the ground and collecting cherries. The player is constantly chased by red monsters resembling small dinosaurs, and the player loses a life if Mr. Do is caught by one.

Cherries are distributed throughout the level in groups of eight. 500 bonus points are awarded if Mr. Do collects eight cherries in a row without stopping.

A level is complete when all cherries are removed, all monsters are destroyed, “EXTRA” is spelled, or a diamond is found.

Mr. Do can defeat the monsters by hitting them with his bouncing “power ball” or by dropping large apples on them.

The game uses a Z80 CPU. The screen is RGB 192×240 in 256 palette colors.