Even the worst video games ever made can make for a good TAS.
This movie speedily plays through "The Cheetahmen", game #52 of a compilation of horrid games called Action 52. While the game is pretty horrible in general, it has a rather catchy BGM.
EZGames69 and Samsara improve the previous movie by 44.76 seconds, thanks to better optimisation and using a warp in the 5th level to spawn the last boss early in a glitched up level.
There are also two published runs of the unreleased sequel, Cheetahmen II. One plays through all the levels, whilst the other starts from level 5 from power-on, due to abusing the fact that some games do not initialize their states before reading them.