World Biome Map
Painted bands across a Robinson-style map. Click a region or a legend chip — the band lights up and the biome card opens.
Browse Biomes
Twelve major terrestrial biomes plus the four aquatic / transitional zones in the legend.
Köppen-Geiger Climate Codes
First letter is the broad zone (A, B, C, D, E). Second letter qualifies precipitation (f, m, w, s) or aridity (W, S). Third (a, b, c, d) qualifies temperature.
City Climographs
Bars = monthly precipitation (mm). Line = monthly average temperature (°C). 24 cities across the major Köppen zones.
Food Web
Pick a biome to see a simplified food web — producers at the bottom, apex predators at the top. The 10% rule means each level passes only ~10% of the energy upward.
Tap a node to read about that species' role.
Drill
Four modes — biome from climate, biome from species, Köppen code, city ID.
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Daily Challenge
Eight questions. Same set for everyone, new at midnight.
Today's set
Question 1 / 8