Super polished. I was actually most impressed by the menu/UI, it’s very well done. The controls are quite difficult to get a handle on, but the puzzles lean in to them well and the mechanics are introduced at a good pace. This is a very solid entry, great work.
I really don’t like the theme/ending, but I appreciate the warnings. I was thinking at first (from the project title) that this was designed after letters/pen-pals sort of deal. I wanted to go through the entry anyways, given the time and effort that you’ve invested.
Regardless, amazing UI, good design considering input limitations, thoughtful implementation of “extras” (collectables! achievements!), fun gameplay.