This is a well made survival and crafting game - thank you!
It's nice that you included a "How to play" section within the game.
I hit a bug where after I got away from the tab and returned the pointer did not get recaptured and I could not look around. But then I opened the crafting menu (Tab) the pointer was recaptured.
It is nice that the purifier, the grill and the beacon are also light sources - a mechanical way to uplift (keep up the spirits).
I was relieved that the character was about to be saved + the repeating alarm of the beacon => I ignored his thirst and he died 30 seconds before the help arrived. This caused the ending to have the opposite effect of uplifting. You can see on the image the activated beacon in the background.
I'm thinking this can be avoided if either the thirst and hunger needs get suspended when the beacon is activated or make them as noticeable as the alarm of the beacon.
Mechanically the game is well made, but I don't think it manages to evoke positive feelings... Maybe that is why there are 8 ratings but no comments? Personally, I'm not bothered, but I guess you can make the game even more uplifting by including some appropriate music and more "juice" when beating the odds - for example when placing the purifier, grill and beacon play some cheerful tune, render some cool animated UI, etc.
Good luck!