There are 2 repositories under jeff-minter topic.
Gridrunner (1982) by Jeff Minter
Disassembled Source Code for the C64 game Iridis Alpha by Jeff Minter
Psychedelia/Colourspace by Jeff Minter
Attack of the Mutant Camels (1983) by Jeff Minter
Revenge of the Mutant Camels (1984) by Jeff Minter