I've always wanted to speedrun something, because I definitely have the patience for it, but I still haven't found the right speedgame for me. Castlevania 1 has been on my mind, but I still haven't even beat it normally yet, let alone in 11 minutes. Zelda 1 is on the table as well, but I would have to practice some weird techniques and glitches for it to work. You can currently beat that shit in less than 30 minutes, so if I were to do that, sub-30 would be my goal before I'd start trying for competitive times.
It has to be a big game with prestige like that, though, and one that I can beat in less than 30 minutes. It might be easier to get the world record for something more obscure, but no one's gonna give a fuck if you have the WR for City Connection on NES or some shit. Then again, maybe it should be a game that would never get ruined by me playing it over and over again, which is also something I'm a little afraid of.
SMB1 is the most important game ever made, which is why I even posted this in the first place; it's the holy grail; it may not be the most popular speedgame right now, but it's the one with the most value imo. I would never, ever think to try doing runs for it, though. That goes for most Mario games other than maybe Odyssey, but only because that game is still popular to do runs for right now, and it would be awesome to be the first player to beat it in under an hour (which has finally been shown to be theoretically possible by combining all the best splits from all the top runners).