Xanthiom is an Atari 2600 homebrew game developed by Mathan Games in 2023. The player controls Lieutenant Grisham, who's on a mission to rid the threats to the galaxy on the planet Planet Coati 5. This homebrew is very much a take on what the original NES Metroid would have been like on the Atari 2600 with the limitations therein.

nymx in this run saves the galaxy while briskly walking and jumping in record time.

You can get the game here.