Yeah. I totally agree with you for the shop menu. We intended to add a lot more features, but unfortunately we ended up having to code a whole map renderer thing from scratch. 

In terms of the boat thing, I keep getting that feedback and meaning to move the top fish down a bit, so sorry about that.

In terms of the bubble glitch, it was really hard to fix. As I said earlier, we had to make something to draw the map from scratch. We didn’t like pico8’s map thing since it could only be moved 8 pixels at a time, so every animation and map tile is a separate sprite that’s being drawn (there is a function for it and a table and stuff so it’s not like we’re drawing each sprite separately). Because of this, the bubble is drawn on a separate layer. The fix for this glitch would be to basically make the bubble part of the map, and I’m not sure how we would do that without re writing a lot of the code. We definitely have a lot to learn for our second jam when we do one.

Got it. The movement speed was tricky since I wanted to keep the player from going super deep right away, so it was either slow speed or decrease oxygen, and I just went with the speed decrease since you needed the oxygen to shoot bubbles.

Yeah, It's an intended feature to help people report bugs. Originally you turned it on by pressing up and down arrows, but while testing, I found that you would normally press those together while changing directions. I chose to set it as X and Z instead, as people don't usually press those at once. It can be easily disabled by pressing left arrow key and right arrow key, which it says in the title. I left it in because I didn't think it would be harmful or cheaty, just like the debug menu in Minecraft. One thing that it does show that could be considered an advantage would be seeing your exact oxygen level I guess, but there's a bar anyway, so it's not a huge advantage.

I was also really worried about the music. I had bought PICO 8 about a week before I started this jam, and had no prior coding experience with text based languages (Other then a little experience with python a couple of years ago). The music is just a repeating loop that's less then 10 seconds long, so I though it would get boring. One of the things that I added was making the music more muffled while you're under water, and more clear while in the shop. No one seemed to notice it though.

Thanks for the positive feedback!