3D Dotty is a video game published by Blue Ribbon

Blue Ribbon (software house)

Blue Ribbon was the budget computer software publishing label of CDS Micro Systems.The label launched in 1985 mostly made up of games from the MRM Software back catalogue. MRM had been a label producing games for the BBC Micro and Acorn Electron. Blue Ribbon reissued these and also converted them...

 for the Acorn Electron

Acorn Electron

The Acorn Electron is a budget version of the BBC Micro educational/home computer made by Acorn Computers Ltd. It has 32 kilobytes of RAM, and its ROM includes BBC BASIC along with its operating system....

 and BBC Micro

BBC Micro

The BBC Microcomputer System, or BBC Micro, was a series of microcomputers and associated peripherals designed and built by Acorn Computers for the BBC Computer Literacy Project, operated by the British Broadcasting Corporation...

 home computers in 1987. The aim is to clear the dots on the three levels of each screen while avoiding the dreaded fungus. Any contact with the fungus will reduce energy, and a life is lost when the energy reaches zero. The fungus can be blocked, but only three blocks are permitted at any one time. On completing a screen a bonus is added to the score, proportional to the amount of energy remaining.

There are eight different screens. After the eighth, the screens are repeated, but energy is reduced by two units upon contact with the fungus. Extra lives are awarded when the score reaches 5,000 and 10,000 points.

There is a practice mode to allow the player to try any of the eight screens.