nostr:npub1e8vknlqfajjexgag4v3sjjy8yeuluyrwd35s47fdyejwqs99z4wsyvs7yy I think it was Mario Galaxy 2 that started the whole "super-hard final optional world" Mario tradition. Bonus worlds have long been a thing, but Galaxy 2's final star was notoriously brutal, much harder than the final challenge in Odyssey, which was primarily a time-consuming test of endurance.