Quest Master is a new game by Skydevilpalm and Julian Creutz looks like a Zelda Maker where you can design your own dungeons and then share them. Hopefully their sharing ability is a little more robust than what Nintendo did with Mario Maker. No release date yet, but apparently a demo is coming soon.
I guess I couldn’t both upload the link and choose a separate image, so here is the steam page https://store.steampowered.com/app/2094070/Quest_Master/