Co-op survival: 1–4 players

Split by resource stream, not by task

The default failure mode for survival co-op is everyone doing everything together: four players walking to the same salvage pile. That is one player’s throughput with four players’ consumption.

Official materials describe the loop in three streams — hunting for hides, scavenging scrap for generators, and running life support. Assign one stream per player and you get roughly three times the throughput for the same heated volume.

• Hunter: food, hides, furs — feeds the clothing upgrade path.
• Scavenger: scrap, machine parts, fragile technology — feeds progression.
• Base: generator uptime, repairs, cooking — keeps the heat on.
• Fourth slot (if used): deep pushes into faction territory, where the risk curve steepens.

The four roles, and what each one is actually responsible for

"Split by stream" only works if each stream has a defined output and a defined failure state. Otherwise three players come home with three half-finished jobs. Here is the version that survives contact with an actual session:

Two players can cover this: Hunter and Quartermaster are the non-negotiable ones in a duo, because food and heat are what end runs. Three players add the Scavenger, and progression starts moving. The Scout is a luxury role that pays off only once the first three are reliable.

The three rules that stop co-op from cancelling itself

Parallelism is easy to lose. Three habits keep it:

1. Never move as a group unless the objective requires it. A four-player walk to one salvage pile is one player's throughput at four players' consumption. Split, and regroup at the shelter.
2. Every player carries a solo survival kit. If the group splits and one player gets caught out, they need their own fire, layer and repair tool. Shared gear at base does not help someone two hundred metres away.
3. Cache forward, don't haul together. Two players each making two short trips beats four players making one long one — fewer exposures, and a cache is insurance if someone dies.

Size the hub to the people, not the ambition

Heat is the tax on volume. A communal hub built for four players and occupied by two still pays four players’ worth of heated space, and that is how co-op groups quietly go fuel-bankrupt. Build to the headcount you actually have tonight.

Agree the loot rule before the first run

Loot sharing behaviour is not published, which is exactly why groups should set their own rule before they are standing over a pile of salvage at 3am. Pick one and write it down:

1. Stream ownership — you keep what your stream produces. Cleanest, least arguing.
2. Need before greed — whoever has an immediate crafting use takes it.
3. Central pool — everything goes to base stock; crafting draws from it.

Stream ownership is usually best for Permafrost because the streams are already distinct and it avoids the central-pool problem of one player quietly consuming the group’s hides.

Co-op does not reduce exposure

Four players lose heat at four times the rate in aggregate. The group is not safer; it is faster. Plan routes on the assumption that the cold bill scales with headcount, and keep the shelter network dense enough that any player can reset alone if the group gets split.

See the co-op system page and the warmth guide.

Where co-op actually pays off

• Deep pushes: faction-controlled ruins are the high-risk, high-value content; a group can absorb a bad outcome that would end a solo run.
• Generator defence: official copy mentions hostile factions and wildlife; a perimeter is easier to hold with two people than one.
• Carrying: more bodies means more haul per trip, which shortens the number of exposures you need to take.

Unmeasured

• Whether threat scaling increases with player count
• Drop-in / drop-out behaviour and whether progress persists for absent players
• Exact loot sharing mechanics (hence: set your own rule)
• Whether shelter heat cost scales per occupant