Can you save your progress in PEAK?
Yes — light a campfire while your backpack and its contents are in your inventory and PEAK autosaves, letting you quit and continue the same expedition later; without a campfire lit, closing the game means starting that climb over.
A lit campfire is the only checkpoint in PEAK — miss one before logging off and the expedition resets.
Yes, but only through campfires. Lighting one autosaves your expedition, and the official PEAK FAQ is specific about the condition: your backpack and everything in it need to be in your inventory, not sitting on the ground, at the moment you light the fire. Items left lying around a campsite don't survive a reload — they're gone when you come back, which is the single most reported "my save ate my stuff" complaint from players.
If you never reach a lit campfire before quitting, there's nothing to load: the climb simply starts over from the beginning next time you launch an expedition.
Disconnecting, restarting, and playing solo
A disconnect isn't the same as quitting deliberately — reconnecting to a lobby that's still running drops you back into the same climb, at the same point, no restart involved. What resets the run is the group actually leaving or the host closing the game without a campfire behind you.
PEAK supports offline single-player, so soloing the mountain works exactly like a group run: same campfire-to-save rule, same consequence if you quit without lighting one.
Two things that people sometimes mistake for "save progress" are actually separate systems. Badges and the cosmetics they unlock are permanent account rewards, not tied to a single expedition — earning one keeps it earned regardless of how any later climb ends. The mountain's layout is a different kind of persistence: its biomes and terrain rotate on a daily schedule, but that rotation only affects expeditions you start after the change — a climb already in progress keeps its own map until you finish or abandon it.