Firekeeper, a Campfire You Tend by Hand

Field notes

The game models each log separately, including moisture and exposure to heat, oxygen, wind, and rain, while letting the player change the pile and viewpoint during play. Its technical notes describe a hand-built 2D canvas renderer with camera projection, depth sorting, flame particles, and 240 physics substeps per second. The page also says the wood, paper, sounds, and sky are computed when it opens rather than loaded as game assets.