How to play PEAK with more than 5 players

PEAK is a brutally challenging first-person co-op survival game where every step counts. While the game is officially designed for solo play or up to four players, some climbers have found a way to scale higher with bigger teams. Thanks to modding, it's possible to play PEAK with more than five players.

Although not officially supported, it adds a chaotic and fun twist to your expedition. This guide will walk you through how to play PEAK with more than five players.

Note: Mods in PEAK must be used only at the player's discretion.

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Playing PEAK with more than five players

Only the host will need this mod — Your friends can join without any setup on their end (Image via Aggro Crab || Landfall)

To unlock the ability to play with more than five climbers, you must install the PEAK Unlimited Mod. This community mod removes the player cap, allowing up to 20 players in a single lobby by default — and potentially more, though performance may suffer as numbers increase.

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How to install the PEAK Unlimited Mod

Here’s a quick guide to installing the PEAK Unlimited Mod from Thunderstore:

1) Download BepInEx Framework

• Go to Thunderstore and download the correct BepInEx zip file.
• Extract the zip into your PEAK game folder. To find the folder, right-click PEAK in your Steam Library, then Manage and Browse local files.

2) Launch PEAK once

• Start and close the game once to allow BepInEx to generate the necessary folders.

3) Install the mod

• Download the PEAK Unlimited Mod from Thunderstore.
• Copy the PeakUnlimited.dll file.

4) Place the mod file

• Navigate to: \PEAK\BepInEx\plugins
• Paste the .dll file into the plugins folder.

5) Edit player limit (Optional)

• To increase the default player cap (20), go to: \PEAK\bepinex\config\PeakUnlimited.cfg
• Adjust the player limit as you like (beware of lag with higher counts).

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While modding lets you turn your climb into a chaotic party, remember that it can also cause bugs or instability. If you run into issues, try removing the mod and launching the game clean. It’s also a good idea to back up your saves before making any changes, just to be safe.