STEG

Steg, also known as Steg the Slug, is a puzzle-platform game developed by Big Red Software and published by Codemasters in 1992. It was released for Amiga, Amstrad CPC, Atari ST, Commodore 64, MS-DOS, and ZX Spectrum. Players control the titular slug who must traverse caverns in order to capture maggots in bubbles, then guide them to his starving young who wait in a nest.