I'm doing the Celestial Cages questline, here are some thoughts :
For the Cage of Sounds, the images are a bit small, it's difficult to see what they represent :/
I didn't figure out the answer to the Cage of Pitfalls, so I had to randomly guess until I found the correct one, but I might just be dumb
For the Cage of Chimes, I couldn't hear anything with the game's music, so I had to guess once again, thankfully you don't need to restart if you fail that one, just keep guessing
For the Cage of Mathematics, the second part is incorrect, because 6/2(1+2)=9, not 1. If you want to get 1 as the answer, the question should have been 6/(2(2+1)) or 6/(2x3) or something like that
The Cage just after Nautilus Harbor doesn't need a key, it just asks if you have 0 keys. But the puzzle itself worked fine
The Cage of War was fun =D
For the Cage of Discovery, everything was fine, just need to guess until you find the right one
The Cage of Searching was fine, a bit annoying until you figure the trick but once you do, it's all good =D
Also, what does the Box of Coupons that you gain by completing the puzzles do? I keep looking at my inventory but I don't see anything new :/