This was so well done! First of all I love the lineart style, not only does it fit the theme but it looks amazing too. The puzzles were really clever, and figuring out what items combine together was very cool, even if it wasn't the correct solution. I'm also amazed you managed to include so many levels!
I have some very minor feedback regarding the UX:
- As others have said, it should be more obvious when you complete a level, like something appearing at the top of the screen.
- Related to that, there should be a way to go to the next level, rather than existing back to the menu.
- There should also be a way to quick restart a level.
- Finally, not a UX issue, but some basic audio would have been nice :)
Overall an amazing job and one of my favourites so far!