Multivoid is a free, open-source co-op multiplayer mod for Voices of the Void, bringing up to four players together in one host’s world and save. Designed to add multiplayer without modifying the game’s files, it lets friends share a station, explore the same base, drive the same ATV and work through the game together. The host runs the save, events and non-player characters, while the mod keeps players and shared activity in sync.

Features include synchronized objects and physics, weather, time, events, creatures, anomalies and signal-desk tasks. Players can communicate through positional voice chat and text bubbles, choose skins and join through an in-game server browser or by IP. Hosts can create private, password-protected lobbies and manage access. The mod also supports reviving players after death without sending the group back to the main menu.

Multivoid is still in development, with each build expanding what the game synchronizes. It requires no account and includes no analytics or tracking.