Good job on your first LD! :) A simple but interesting game that I enjoyed, I got to 51. The increasing pitch and shrinking space manage to build up the tension, and not being able to go backwards with the ship makes anticipation interesting. The small but sufficient variety of debris was a good touch. I would have appreciated a little something, even just a line of text, to have some narrative glue as to why destroying asteroids widens the space ("Lost in the outskirts of space aboard a trusty old ship, you do what you can. Delay the anxiety of your inevitable doom by destroying all the debris you can. Enjoy it while it lasts" or something). Another idea more on the GD side to spice up interest: presently, there's infinite ammo, thus no downside to spamming the spacebar. It's a first-order optimal strategy, nothing wrong with that, but the player input to execute it is annoying. Either lean into it by allowing to shoot by simply holding (and maybe, as downside, the debris splits into parts? I don't know, and it's one more feature cram into the 48h, hard), or add a downside to shooting (e.g. a cooldown, more manageable within the time limit) to deepen the tactical aspect.