Well, spoiler warning for folks who haven't played, but there's a hidden of the game where you're brought into an 8-bit top-down adventure game similar to the original legend of Zelda. At the start, you're powerless and have no way of damaging the enemies. But after getting a sword, you start to progress in power, being able to destroy more objects and enemies as you level up. Eventually you hit max level and you're able to destroy the boundary objects, and you end up getting out of bounds to unlock a secret. You end up in a dark room where the text even says "There is Nothing Here". So felt at least like a spiritual homage.