Nintendo had absolutely nothing to do with this. Mario and Luigi from 2001 is a fan-made DOS platformer that borrowed two of the most recognizable names in gaming history and ran with them — straight into bargain-bin territory. Whether that took nerve or just naivety, I genuinely can't decide.

The premise is about as thin as they come. Two brothers, familiar color-coded caps, side-scrolling levels. Get from A to B without dying. There's no princess, no Mushroom Kingdom lore, no overworld map with cheerful music. Just you, a jump button, and whatever the creator managed to squeeze into a DOS executable at the turn of the millennium.
The gameplay is pure old-school platform logic: jump over enemies, avoid the gaps, keep moving right. The controls do what you'd expect from a homemade DOS project — functional, occasionally stiff, nothing that's going to surprise you. It's the kind of game where you figure out the full ruleset in about ninety seconds and then spend the rest of the time seeing whether the level design gives you any reason to stick around. Spoiler: it's a short visit.

What makes something like this worth talking about at all isn't quality — it's context. In 2001, a teenager with enough determination and the right tools could slap together a platformer, name it after Nintendo's golden boys, upload it somewhere, and watch it spread through floppy disks and early internet forums. No gatekeepers, no takedowns, no algorithm. Just a .exe floating around in the wild. There's something almost endearing about that era of bedroom development, even when the result is rough around every single edge.
It hasn't aged into anything it wasn't. The graphics were simple then, they're simple now. The level design doesn't build on itself. The sound — if there is any — isn't going to stick with you the way a genuine Sound Blaster FM tune might. This is a snapshot of what fan development looked like before game engines became accessible to everyone, and it has exactly that much value: historical curiosity, not hidden gem.

Today it'll appeal to exactly one kind of person — someone who wants to see what the fringes of DOS gaming actually looked like when random people were making unlicensed stuff on machines their parents paid too much for. If that sounds like you, spending fifteen minutes with it in the browser costs nothing and answers the question cleanly. Everyone else can safely leave Mario and Luigi to the archivists.