Mr. Do! was originally released by Taito as an arcade game in December 1982. It was then ported to many video games systems and home computers including the Atari 2600, Atari 8-bit computers, Colecovision, Commodore 64, MSX and Apple II.
Mr. Do! is a circus clown (for whatever reason!) and the main object of the game is to dig tunnels in order to collect a harvest of cherries from the orchard. If he collects 8 cherries in a row then a 500 point bonus is given. There are also red monsters (sort of like dinosaurs?) to deal with, and one way to dispose of them is to dig under the apples at the right moment so they crush them.
As with many games from the first half of the 1980s, memory restrictions didn't allow for a high number of levels. There were just eight screens in the Atari 2600 version and this was pretty normal back then. Other similar 80's games were Dig Dug and Boulderdash, the latter being released in 1984 and featuring a level editor.
The video at the top of the page compares twelve different versions of the game, starting with the arcade version. There's even a version for the Sharp X68000, a computer that was only ever released in Japan.
Atari 2600 cartridge box
This instructions leaflet came with the Atari 2600 game manufactured by Coleco.
Nintendo Game Boy cartridge
80s Video Game Reviews