A really lovely game, seems super polished - the graphics are nice, the level design is great, nice music which isn't in any way distracting but also provides enough variation to keep the game flow going. The gameplay style kinda reminded me of Reventure with, of course, the cool addition of non-euclidian exploration.
Personally I found the grappling hook section quite difficult (even a tad frustrating having to go back all the way after failure) but I suppose it is alright as it is close to the last section of the game.
I would like to say that I'd love to see a full post-jam version but it seems so complete and full already! Great work, awesome game!