Repton 3 is the third in the popular series of Boulderdash clones developed initially for the BBC Micro and Electron computers and subsequently ported to several other formats. It was the first in the series not to be written by Tim Tyler, Matthew Atkinson instead taking up the reins.
Some new features were added to the game, include fungus which spreads wherever it finds space. Also the game included a level editor for the first time which allows the graphics and level design to be modified. Three further games were released based on the Repton 3 game engine with updated graphics and levels.