Lemmings is a 1991 puzzle game by Psygnosis, ported for the CPC in 1992. The goal of the game is to guide a certain number of lemming safely to an exit, which requires turning them into e.g. bridge builders, diggers, climbers, blockers, etc. at the right moment so that the following lemmings can walk towards the exit without plunging to their deaths.
This game was extremely popular during the early 1990s, particularly on the Amiga, and the CPC version looks and sounds pretty good too. The deeply saturated CPC color palette works really well here.