The game originally released on the NES, and has only ever been officially re-released on PC as part of the Konami Collection, the Switch in its original form, and I think there's a collection on XBS and PS5 (maybe XB1/PS4 as well?) with the NES Castlevania games, basically a console port of the Konami Collection, only it doesn't have the Contra games (and I think it has Castlevania IV). It was never a Super NES game. That said, I'm super curious about this ROM hack.

Found a video reviewing it: https://www.youtube.com/watch?v=hYhfIs9K2HY

Edit: Game is pretty broken. Don't press select. Doing it at the main menu will hang it, doing it while paused/in the Start menu (inventory) will hang it. Save often, I suppose — you would do so with this game on an emulator anyway due to the bullshit platforming (especially in the swamp! you know the scene!).