Nucleus Co-Op Supported Games

Nucleus Co-Op currently supports over 800 games through community-created handlers. Below are 20 of the most popular titles with dedicated wiki guides. Full handler downloads are available on the SplitScreen.Me Game setup library.

800+

Total Supported Games

4

Max Players (most games)

Free

All Handlers

Windows

Platform

What Are Game Handlers?

A handler is a small JavaScript configuration file (.js or .nc) that instructs Nucleus Co-Op on exactly how to launch, configure, and connect multiple instances of a specific game. Every supported game needs its own handler — there is no universal handler that works for all games.

Handlers are entirely community-created and maintained. They are distributed for free through the SplitScreen.Me Game setup library. Each handler's description lists which version of the game it was tested on, how many players are supported, which platforms work (Steam/Epic/etc), and any special requirements.

If a game you want is not on the list, you can request or create a handler through the GitHub repository. Handler scripting uses a JavaScript-like syntax with Nucleus-specific APIs for managing processes, symlinks, input hooks, and window management.

Best Nucleus Co-Op Games

These are the most popular and best-supported Nucleus Co-Op games based on community usage and handler quality. Each has a dedicated guide page with installation steps, configuration tips, and common fixes.

Halo: The Master Chief Collection split-screen with Nucleus Co-Op

Halo: The Master Chief Collection

2-4 Players Steam Easy
Elden Ring split-screen with Nucleus Co-Op

Elden Ring

2 Players Steam Medium
Minecraft Java Edition split-screen with Nucleus Co-Op

Minecraft Java Edition

2-4 Players Launcher Medium
Grand Theft Auto V split-screen with Nucleus Co-Op

Grand Theft Auto V

2 Players Steam Medium
Grounded split-screen with Nucleus Co-Op

Grounded

2-4 Players Steam Easy
Left 4 Dead 2 split-screen with Nucleus Co-Op

Left 4 Dead 2

2-4 Players Steam Easy
Call of Duty: Black Ops 2 split-screen with Nucleus Co-Op

Call of Duty: Black Ops 2

2-4 Players Steam / Plutonium Medium
Call of Duty: Black Ops 3 split-screen with Nucleus Co-Op

Call of Duty: Black Ops 3

2-4 Players Steam Medium
Borderlands 2 split-screen with Nucleus Co-Op

Borderlands 2

2-4 Players Steam Easy
Enshrouded split-screen with Nucleus Co-Op

Enshrouded

2-4 Players Steam Easy
Risk of Rain 2 split-screen with Nucleus Co-Op

Risk of Rain 2

2-4 Players Steam Easy
Deep Rock Galactic split-screen with Nucleus Co-Op

Deep Rock Galactic

2-4 Players Steam Easy
Valheim split-screen with Nucleus Co-Op

Valheim

2-4 Players Steam Medium
Sons of the Forest split-screen with Nucleus Co-Op

Sons of the Forest

2-4 Players Steam Medium
Project Zomboid split-screen with Nucleus Co-Op

Project Zomboid

2-4 Players Steam Medium
Raft split-screen with Nucleus Co-Op

Raft

2-4 Players Steam Easy
Terraria split-screen with Nucleus Co-Op

Terraria

2-4 Players Steam Easy
Lethal Company split-screen with Nucleus Co-Op

Lethal Company

2-4 Players Steam Easy
Phasmophobia split-screen with Nucleus Co-Op

Phasmophobia

2-4 Players Steam Medium
Peak split-screen with Nucleus Co-Op

Peak

2 Players Steam Easy

Games by Category

Shooter

Game Players Platform Setup Difficulty Guide
Left 4 Dead 2 2-4 Steam Easy View Guide
Call of Duty: Black Ops 2 2-4 Steam / Plutonium Medium View Guide
Call of Duty: Black Ops 3 2-4 Steam Medium View Guide
Deep Rock Galactic 2-4 Steam Easy View Guide
Lethal Company 2-4 Steam Easy View Guide
Phasmophobia 2-4 Steam Medium View Guide

Survival

Game Players Platform Setup Difficulty Guide
Grounded 2-4 Steam Easy View Guide
Enshrouded 2-4 Steam Easy View Guide
Valheim 2-4 Steam Medium View Guide
Sons of the Forest 2-4 Steam Medium View Guide
Project Zomboid 2-4 Steam Medium View Guide
Raft 2-4 Steam Easy View Guide

RPG & Adventure

Game Players Platform Setup Difficulty Guide
Halo: The Master Chief Collection 2-4 Steam Easy View Guide
Elden Ring 2 Steam Medium View Guide
Grand Theft Auto V 2 Steam Medium View Guide
Risk of Rain 2 2-4 Steam Easy View Guide
Terraria 2-4 Steam Easy View Guide
Peak 2 Steam Easy View Guide

Other

Game Players Platform Setup Difficulty Guide
Minecraft Java Edition 2-4 Launcher Medium View Guide
Borderlands 2 2-4 Steam Easy View Guide

Games Without a Handler

If a game does not have a Nucleus handler, Nucleus Co-Op cannot be used with it — regardless of whether the game has LAN or online multiplayer. Handlers must be created manually for each game. Some highly requested games without stable handlers as of 2025 include: Baldur's Gate 3 (no stable handler), Helldivers 2, Sea of Thieves, and Fortnite.

For games without a Nucleus handler, alternatives include Universal Split Screen (which attempts a generic approach) or Steam Remote Play Together for online-only co-op.

Games FAQ

Does Nucleus Co-Op support all Steam games? +
No. Only games that have a community-created handler are supported. The game must also have LAN or online multiplayer for instances to connect. Single-player-only games cannot be split-screened with Nucleus.
What are the best Nucleus Co-Op games for 4 players? +
Top 4-player games include Halo MCC, Left 4 Dead 2, Deep Rock Galactic, Grounded, Borderlands 2, Risk of Rain 2, and Terraria. These all have stable handlers with good 4-player support.
Does Nucleus Co-Op work with modded games? +
It depends on the handler. Some handlers like the Elden Ring handler specifically require the Seamless Co-op mod. Others like Terraria work with tModLoader. Check each game's game setup notes for mod compatibility.
Why does my game have a handler but still not work? +
Handlers are tied to specific game versions. A Steam update may break a handler temporarily until the handler developer updates it. Check the handler hub page for the last-updated date and any known issues.