Jeff Minter‘s Voidrunner is about as a good as a bullet hell shooter gets on the Commodore 16. It was published alongside Hellgate (as a double pack) by Llamasoft in 1987.
Jeff Minter‘s classic Iridis Alpha is a weird horizontal shoot ’em up first released in 1986 through Llamasoft and Hewson Consultants.
Jeff Minter‘s seminal shooter Ancipital features psychedelic sprite-based visuals and fast blasting/running/jumping action.
Jeff Minter’s 1994 remix of the classic arcade game Tempest is quite exciting on the Atari Jaguar.