I don't own Mario Maker 2 and I have only played a little bit of Celeste. I will say I think this is a cool community attachments to have devs from other platformers make Mario levels using MM2.
Ill link a video below to watch. Forgive the video choice. I couldn't find a straight clip of the level. Had to link a random streamer.
I would love to see more of this in the future.
What are your thoughts on the Celeste creators making levels? And have you played on them and liked them?