Quite simple game, here is my criticism.
I liked how your overheat max meter decreases as you collide, this makes it speedrun viable, I don't think it is procedural which is good since rng is not good for a speedrun and the theme is implemented well.
I think you have forgotten to make the music loop. I also do not like the lack of juice(Spaceship looks great but I want something other than audio cue when you hit an asteroid, and I want a small amount of i-frames later). Lastly, the background is too eye-taking, this could be prevented just by simply adding less starts. I don't think you had a lack of time since the game is very simple, but of course you might have had to do something irl and wasn't able to spend much time on the game. Overall, I think the game is quite simple but fun, good job!
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As for the music looping: i have no idea what went wrong. The track itself is 3 minutes long but it cuts out at the 40s mark. I noticed it when I was basically exporting so I wasn't able to find out what's wrong.
As for the juice: I am still learning Godot (currently week 2) and I wasn't able to find a fast way to make screenshake and I've just been starting and finishing game jam games over the last week so it wasn't high on my list of priorities.
Because of that I was only able to spend ~ 15 hr on the game itself. I could have probably implemented iframes here so that's a good point.
I didn't make the stars but I guess that I could've removed some of them since I also noticed that it's quite a packed scene overall.
In any case, thank you for your feedback and especially - honesty. We need more ratings like this