Stronghold is a spaceship action game for the Commodore 64 that was published in the April 1991 issue of the Compute's! Gazette!. The crew of the Starship Explorer have found themselves stranded and trapped in an alien stronghold on a distant planet, and it is up to you save them. Navigate the mazes, deactivate the force fields, and avoid any and all hazards, especially the giant aliens, as you bring the crew home safe and sound.
nymx here does just that and phases through the planet's surfaces and walls like they don't apply to him to, beating the game in record time.
WARNING: There are flashing lights throughout the movie, caused by the clipping glitch, that may be rather uncomfortable to those with photosensitivity conditions.