Who is in the session
The official description lets you play alone or with up to three friends, so a co-op group is four people. The server size on the Roblox page is 30. Those are different caps. Four is the team inside one survival run. Thirty is the server.
Lobby pads seen in footage were labeled 1/1 Normal Public and 1/2 Normal Friends only. The lobby buttons are Shop, Lobbies and Settings. Two currency counters, cash and gems, sit at the top right and start at 0 for a new player.
Voice chat is listed as not supported on the experience page. Plan with text or with the in-game talk prompts.
Split the first hour
A four-player opening can fill more than one bucket while the taps run. That is the only co-op advantage the first-night footage clearly shows. Someone should still watch the door. Extra water in the bath does not help if the flat is open.
Suggested split, using jobs the classes actually name:
- One person on the bucket, the tub and the rack.
- One person emptying the fridge and cupboards into the pantry.
- One person on the peephole and the chain.
- One person reading Rations once the counters move, so the group does not eat the reserve.
The free Survivor can do every one of those jobs. A class makes one of them cheaper or quieter. It does not add food from nothing.
Neighbors are shared
Talk prompts are per character, and a bad door opening is shared. Peephole first, including when a friend says they already checked.
- Daniel knocks on Night 0. Let him in and close the door. He tells you to keep the noise down.
- Ruth warns the group off the west stairwell.
- Mara takes 2 portions across the balcony gap for her radio. One person can make the handoff. The food still comes out of the shared pantry if that is where you stored it.
- A co-op group traded food to a neighbor and received a radio. That is one observed trade, not a shop with a price list.
- Eli asks whether the hall is quiet, then asks not to be left. Answering him is a choice about noise and about company. They are separate costs.
- Arthur, in a hi-vis vest, is the person who knows the roof key. Bring a bandage if the Day 20 objective to get him out of the floor 28 maintenance room is active.
Courier route marks are seen by the whole team. Scavenger's extra find is once per container for the whole party, not once per player. Do not have four people re-search the same drawer expecting four bonuses.
Passes that change a group and passes that do not
Shove knocks a player back and down for 1.5 seconds and does no damage. It also staggers infected in front of you. Cooldown is 10 seconds even on a miss. It does not work in conversations, on ladders, or while boarding. Do not use it on a friend who is carrying the bucket.
Supporter is a lobby title and a gold name tag. It adds no supplies. Donations are separate and only move the lobby Donation Board.
Custom Music Radio plays an audio ID on a battery radio you still have to find. Everyone nearby hears it. The infected hear it too.
Save Slot 2 and Save Slot 3 are extra campaign slots on the November pass list. See the objectives page before you assume the free game already continues a run.
When the door fails
Co-op footage includes a failed door and a fallback. Agree the fallback room before the 11:00–15:30 window on the day the three infected are scheduled, and before you cut the loud chain under floor 27. A dedicated repair person only helps if the screws and the hammer are already in the flat.