IRON NEST: Heavy Turret Simulator is currently single-player. Official multiplayer is planned as a free later update. It has no release date.
The October 1 roadmap places free multiplayer after the free Skirmish missions, free additional content, and a paid expansion. Patch #8 adds Guarding the Strait; it does not add multiplayer.
What will the multiplayer update do?
The current developer FAQ describes each player commanding a separate Nest on the same map. Planned modes include:
- cooperative missions where operators coordinate their fire against shared targets;
- competitive modes where other players become the targets.
This is a description of the intended mode, not a playable feature. The developer has not announced the player limit, networking requirements, or release window.
Is the shared-platform co-op game the same thing?
No. The FAQ describes two different products:
| Plan | How operators play | Timing |
|---|---|---|
| Heavy Turret Simulator multiplayer update | Each player commands their own Nest on a shared map | Planned; no date |
| Separate standalone co-op game | Several operators serve together aboard one platform, with new vehicles and machines | FAQ planning window: late 2027 or early 2028 |
Do not use the separate game's planning window as a date for this game's multiplayer update.
Can I play co-op through a mod?
An unofficial project called Synchrony has a public Nexus Mods listing. It is separate from the developer's multiplayer plan. This site's mod status page identifies the listing and the checks to make before installing it.
A community mod does not change the official single-player status, and its compatibility needs checking after game updates.
Should I buy now or wait?
Buy the current game if the single-player firing loop is what you want. If official co-op is essential, wait for an announcement showing a playable mode and release details.
The current roadmap explains the order of planned releases. It does not establish how long each phase will take.
Sources
- Official Steam store: single-player category
- Developer FAQ: the two multiplayer projects
- October 1 roadmap announcement
Store categories, the FAQ, and the roadmap were checked on October 4, 2026.