As of 2025, there is no official multiplayer from Beam Team Games. However, players seeking stable co-op survival should consider:

Furthermore, Stranded Deep features a complex save system based on island-by-island loading (to optimize performance). A 4-player mod would need to manage this asynchronously: if Player A is on the home island and Player B is two islands away crafting spears, the server must keep both “cells” active in memory simultaneously, dramatically increasing CPU and RAM requirements. The hypothetical modder would essentially need to rebuild the game’s core simulation from a single-threaded, local experience into a multi-threaded, server-authoritative architecture. This is why no stable, fully-featured 4-player mod exists as of this writing; the technical debt required is staggering, bordering on a complete game remake.

Islands are balanced for 1-2 people. With 4 players, you will run out of food and water twice as fast.

You can play with a second person on one PC using a controller and keyboard/mouse setup.

A "4-player mod" is a highly sought-after modification that allows for a larger group to survive together. This blog post covers everything you need to know about setting up and playing Stranded Deep with four players. Can You Play Stranded Deep with 4 Players?

: The game's netcode is specifically optimized for two connections. Adding more players frequently causes "rubber-banding" and items disappearing for guests. UI Overlap

A brutal Amazonian survival game with 4-player support. Final Verdict