A Link to the Past/Super Metroid combo randomizer. Both games smooshed into a single ROM, with certain doors taking you from one to the other. Item pools are then shuffled together, sending you on a big scavenger hunt to find Metroid items in Hyrule so that you can explore Zebes to find Zelda items so that you can explore Hyrule.
Unfortunately it's somewhat lopsided due to how much bigger ALttP is than SM, but the technical novelty of it is amazing and worth a playthrough.
Word of caution, do NOT read the original manga. It's kind of infamous for the incredibly controversial direction the story goes in the second half, which the anime thankfully omits.