How a PEAK island is put together
Every expedition climbs six regions in the same order, and only the middle four change from day to day:
- Region 1: the Shore, always first.
- Region 2: the Tropics or the Roots.
- Region 3: the Alpine or the Mesa.
- Regions 4 and 5: the Caldera followed by the Kiln, or the Gloom followed by the Citadel. These always come as a pair.
- Region 6: the Peak, always last.
The island changes at 17:00 UTC and every lobby gets the same one. In the current 208-island pool, the Tropics and the Roots appear on 104 days each, the Alpine on 105 and the Mesa on 103, and the Caldera and Gloom endings on 104 days each. The daily map guide explains the rotation in detail.
What changes between biomes
Each biome has one signature threat that decides how you climb it:
- Shore: jellyfish that poison you and knock you over, giant urchins, and bridges that break under too many scouts.
- Tropics: rain storms that make every unsheltered surface slippery, plus spore bombs, poison ivy and beehives.
- Roots: wind gusts that push you sideways and drain stamina faster, with spore clouds and spiders in the trees.
- Alpine: blizzards that pile on Cold; the hot spring with its capybaras is the safe spot.
- Mesa: direct sun that builds Heat, cacti, tornadoes and antlion traps, but also the most luggage and the Tomb.
- Caldera and the Kiln: lava that rises and falls, erupting rocks and condors, then a vertical climb inside the volcano with no campfire and no natural food.
- Gloom and the Citadel: purple fog that makes you drowsy, cleared only around belltowers, then a tower full of arrow, spike and mace traps.
From Peak difficulty up, fog rises behind you, so knowing the next hazard in advance saves real time.
Which guide to read first
If you only have time for one, read the guide for today’s region three. The Alpine and the Mesa demand opposite preparation: shelter and heat for one, shade and a Parasol for the other. For the finale, the Kiln rewards saved chain launchers and pitons; the Citadel rewards speed.
Checking today’s lineup
The biome rotation page shows today’s regions and the coming week. The full map shows the terrain with luggage, statues and amulets marked. On Mesa days, check today’s Tomb status before you plan a detour: in the current pool the Tomb is open on 42 of the 103 Mesa days. Today’s status is still the check if a later patch seals some.