Stranded - Deep 3 Player Mod

Supports 2-player online co-op but generally lacks local split-screen.

While you can’t add a third person, you can use mods to significantly overhaul the 2-player survival experience. stranded deep 3 player mod

Community discussions on Steam and the official forums highlight several reasons why a 3-player mod hasn't been realized: Supports 2-player online co-op but generally lacks local

Allows players to switch to a fully functional third-person perspective, which can make navigating the environment more comfortable during co-op. The physics calculations for a third player and

The game already struggles with desynchronization, invisible objects, and bugs even with just two players. Adding a third would likely break world-state syncing.

In co-op, the host’s PC acts as the server. The physics calculations for a third player and their interactions with the world would place a significant strain on most residential hardware. Popular Mods to Enhance the 2-Player Experience