That's a pretty tricky puzzle game. I feel like I had to think on each one (which I mean as a compliment for a puzzle game). Like for each level, it looked easy enough, but I never got it on the first try. So I'd try something, and whoops! that doesn't work and have to try something else. Which is all you can really ask for in a puzzle game. Lots of good aha! moments. I liked how some of the maps got more narrow and had a bunch of sharp corners so it was just easier and neater to place my waypoints at sharp 90 degree corners, but then you needed to remember that you could travel at angles to solve the puzzle. Just kinda neat how the level layout tricked me there.
The UI and stuff was easy enough to understand what was going on. The paths your planes were going to take was clear. My biggest issue was figuring out the undo. The font makes 2 and Z the same and even when you tried to clarify, I read it as 2EE and tried double-tapping E. (For anyone else wondering, undo is Z like is standard everywhere). A small pain point was the later levels, you'd fail and the map would reset and you'd have to redo all your paths, but I understand it's a game jam and features like that take a bunch of time so it's not a big issue with me. Still, once I figured out the button for undo, it was very helpful to have.