Kindling

A wolf alone at a fire, eight hours of dark, and one bag of sticks.

Every stick either burns to keep you warm or stacks into a fence to keep the night out. Spend wrong and the fire is out before dawn. Split it right and you see sunrise.

One night is short. The line between warmth and the dark is tighter than it looks, and it is not the one you would guess.

Free, playable in the browser. Goes by in a few minutes. If you play, tell me what happened: dawn or fire-out.