For those that are unaware, the second chad is most likely referring to .kkrieger. Not a full game, but a demo (from a demoscene) whose purpose was to make a fully playable game with a max size of 96kb. Even going very slow, you won't need more than 5 minutes to finish it.
The startup is very CPU heavy and takes a while, even on modern systems, because it generates all the geometry, textures, lighting and whatnot from stored procedures.