2. Sonic The Hedgehog 2
https://www.youtube.com/watch?v=grzwm1MBuqI If only Sega had known this gamer when recording footage for those infamous advertisements which show off the 'blast processing' prevalent in Sonic The Hedgehog, whatever blast processing actually is. Nonetheless, Sonic games are big with speedrunners, probably because the games are pretty damn hectic and fast-paced to begin with. Sonic 2 had some seriously tough moments, but they come across as simple here - completing the entire game in just over 15 minutes is insanity, but here's proof that it happened. It's fair to say there are few quicker than this one!