You’ve got three friends. You’ve got four available heroes. It seems like the easiest math in the world, right? But if you’ve actually tried to boot up the main campaign with your whole squad, you already know the frustrating truth: Gotham Knights locks the story to just two players. It’s a weird restriction that has sent thousands of people scouring the internet for a Gotham Knights 4 player mod to fix what feels like a massive oversight.
The reality of the situation is a bit of a "good news, bad news" sandwich. Honestly, the modding scene for this game is vibrant, but it hasn't quite cracked the code on rewriting the game's core networking architecture for the open world.
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The Current State of the Gotham Knights 4 Player Mod
Let’s get the big misconception out of the way immediately. As of right now, there is no magical Nexus mod that allows you to play the entire story campaign from Case File 01 to the finale with four people at once.
Why? Because the game wasn’t built for it.
The developers at WB Games Montréal were pretty vocal about the fact that they designed the open-world traversal and "untethered" co-op specifically for two players. When you have two people flying around Gotham on heroic traversals, the engine has to render two completely different parts of a massive, detailed city simultaneously. Adding a third and fourth player would basically turn your PC into a space heater and drop the frame rate into the single digits.
What You Can Actually Do Right Now
While a "campaign mod" doesn't exist in the traditional sense, the community has found ways to optimize the experience we do have. Most players looking for a 4-player experience are actually looking for Heroic Assault.
- Heroic Assault (The Official "Mod"): This was a free post-launch update that added a 30-floor "tower" mode. It supports four players natively. If you haven't touched the game since launch, this is basically the "4 player mod" you were looking for, just delivered officially.
- The Kelvin Spiral: A second 15-floor raid-style addition that also supports 4-player co-op.
- UI and QoL Mods: While they don't add more player slots, mods like "The Complete Transmog" or "Faster Batcycle" make the 4-player Heroic Assault mode feel a lot less grindy.
Why a Mod for the Campaign is So Hard to Make
Modders are geniuses, but they aren't miracle workers. To get a Gotham Knights 4 player mod working for the story, someone would have to essentially rewrite the game's netcode.
In the main story, the game uses a host-client model where the host's machine handles most of the heavy lifting for the world. If you’ve ever noticed a bit of "rubber-banding" when your partner enters a cutscene or a loading zone, imagine that multiplied by four.
"We chose two-player co-op for the campaign to ensure the city felt seamless and the performance stayed stable,"
That’s a paraphrased sentiment from the dev team, but it holds up. Even on high-end rigs, Gotham Knights struggled with performance at launch. Splitting the rendering budget four ways for a 4-player campaign mod would likely break the game's scripting, causing missions to fail to trigger or characters to fall through the floor.
Heroic Assault: The Closest You’ll Get
If you’re desperate to play with three buddies, you need to head to the Heroic Assault terminal in the Belfry. It’s not the story, but it’s where the 4-player action lives.
It’s a different beast entirely. You aren't roaming the streets of Gotham freely. Instead, you're in arena-like environments fighting waves of enemies, solving light puzzles, and eventually facing off against Starro the Conqueror. It’s essentially a "Horde Mode" on steroids.
How to access it:
- Complete Case File 05 in the main story.
- Interact with the map in the Belfry or use the main menu.
- Invite your three friends.
It’s sort of a bummer that you can't take that same squad and go take down Harley Quinn in the main world, but for now, this is the only way to see Batgirl, Nightwing, Robin, and Red Hood on screen together.
The Future of Modding in Gotham
Could we see a Gotham Knights 4 player mod in the future? Maybe.
Look at games like Elden Ring. It took a long time, but the "Seamless Co-op" mod eventually bypassed the game's native restrictions to allow a full party to travel the whole world together. However, Elden Ring has a much larger player base and more documentation for its engine.
The Gotham Knights community is smaller, and without official modding tools, the hurdles are high. Most modders are currently focused on visual overhauls, removing the "washed out" look of the city, and fixing the cape physics.
Actionable Next Steps for You and Your Squad:
If you want the best 4-player experience possible right now, don't wait for a campaign mod. Instead, follow this path:
- Split the Story: Have your group split into two pairs. Play the campaign simultaneously while hanging out in a Discord call. It's not the same as being in the same world, but you can coordinate your progress and gear.
- Gear Up for Raids: The 4-player Heroic Assault mode is significantly harder than the base game. Use your 2-player campaign time to farm Legendary gear blueprints.
- Install "Better Batcycle" and "Remove Distance Blur": If you’re on PC, these mods (found on Nexus Mods) make the traversal between mission markers feel much faster and look way sharper, which helps the 2-player "grind" feel less like a chore.
- Jump Into The Kelvin Spiral: Once you hit the level cap, take your full squad of four into the Kelvin Spiral. It’s the most challenging content in the game and genuinely requires all four heroes to use their unique abilities in sync.