"Manic Miner is a platform game originally written for the ZX Spectrum by Matthew Smith and released by Bug-Byte in 1983 (later re-released by Software Projects). It is the first game in the Miner Willy series and among the pioneers of the platform game genre. The game itself was inspired by the Atari 800 game Miner 2049er. It has since been ported to numerous home computers and video game consoles.
At the time, its stand-out features included in-game music and sound effects, excellent playability, and colourful graphics, which were well designed for the graphical limitations of the ZX Spectrum. The Spectrum's video display allowed the background and foreground colors to be exchanged automatically without software attention and the "animated" load screen appears to swap the words Manic and Miner through clever manipulation of this feature."
Source: Wikipedia, "Manic_Miner," available under the CC-BY-SA License.
Individual credits:
Matthew Smith: design