There are several biomes in One Hour One Life, from green grasslands to barren badlands. Each biome has resources commonly associated with it, though many can be found in multiple biomes. Biomes can vary in temperature. In the Temperature Overhaul update, deserts and jungles became hotter, and a "Thermal Shock" component was added which causes you to rapidly jump between extreme temperatures if you cross certain biome boundaries without the insulation of clothes. It is no longer advised to stand on desert edges to keep warm. Use a fire instead.
Some races (e.g. black-skinned) are specialized for biomes like the desert, making them the only ones to interact with items and features in that biome. Otherwise, these biomes will be marked "Inhospitable" ("Frigid" for Tundras) and characters will drop their held items if they attempt to enter. Thus, technological progress requires trade or a diverse town.
Badlands are colder than grasslands, though not as cold as tundra.
Also known as Polar. Bitterly cold. Redheaded families are the only ones who can interact with items in this biome.
Searingly hot. Black-skinned families are the only ones who can interact with items in this biome.
Jungle is hot, though not as hot as desert. Brown-skinned families are the only ones who can interact with items in this biome.