Castlevania 64. Not even Legacy of Darkness, the original one. It gets a lot of hate I think just because the rest of the series has such awesome games and it gets held to a high standard but just as a N64 game I loved it.

I’ve used it in the past and its awesome. It works very well even on ancient hardware and is a fully functioning OS even if you never install it and just run it in live mode. Its basically a computer you can keep on your keychain and run on anything.