Very cute little concept. I liked the countdown on the menu, that was a nice touch. I was also confused about the lack of a web build when I started playing, but the fact that the game closes itself means that wouldn't work, would it? Honestly I did find that a bit annoying, but I get what you were going for. I was a bit confused on my first playthrough because the signs were hard to see, but I figured it out eventually - though I couldn't figure out the last step once the fuel rod was in the reactor. The jumping physics were a bit messy, which made the platforming tricky, but honestly that kind of added to the stress, which made it more engaging. I would have liked more platforming and less just running in a straight line, even if the time pressure did still make running back and forth kind of engaging, just because it felt like I wasn't really interacting with the game much. There was also a bit of jitter on the movement, but props for making all the sprites yourself, I thought they were really charming! A title screen background would have been appreciated, but I get that the time limit makes that difficult.