Video game modders are fusing classic titles into playful, bizarre mashups that are spreading rapidly across social media. Players are now battling Elden Ring bosses armed with Minecraft swords, skateboarding across Call of Duty maps, and swinging through Gotham City as Spider-Man.

The wave of AI-assisted creations is made possible by Claude-based AI agents—built on Anthropic's Claude model—which help users "vibe code" mod mashups in a matter of hours.

How the mashups work

Social media has exploded with video game mods that combine titles many players never expected to see together. People are driving Mario Kart vehicles through Call of Duty Zombies, fighting Elden Ring bosses with Minecraft characters, and swinging through Batman's Gotham City as Spider-Man.

All of it is built by gamers using Claude AI agents to vibe code the mods from the ground up. According to a popular GitHub guide, merging two games relies on a "passthrough mod," which runs both games simultaneously—one hosting the world while the other supplies the gameplay, meaning movement and combat. In practice, the passthrough approach means one title acts as the stage while the other controls how the player moves and fights.

Vibe coding—a term coined by AI researcher Andrej Karpathy in early 2025—requires the user to tell the AI model what they want, test the outcomes, and provide feedback, leaving the model to handle all of the coding itself. In effect, the human acts as director and tester while the AI writes the code. The GitHub guide claims it took three to four hours to merge Elden Ring and Spider-Man, although it warned that first results are often rough around the edges. Modding itself has deep roots in gaming—Counter-Strike and Dota both began as fan-made projects—but merging two full commercial titles has traditionally required hand-written code and engine-level know-how that put it out of reach for most players.

Some gamers say this is "one of the coolest things I've seen in gaming in 10+ years," and that it marks the dawn of "the renaissance of gaming." Here are some of the standout AI video game modding mashups so far.

Kickflipping in Call of Duty

One of the first mashups to go viral combined cult classic Skate with Call of Duty: Modern Warfare 2, allowing gamers to skateboard across their favorite maps. The clips quickly spread across X, drawing amused reactions from players.

"Imagine hitting a trick shot with this. We will see clips soon, any moment now," one X user posted. "This is the greatest thing that will ever happen in Call of Duty," another said.

AI HACKERS HAVE PUT SKATEBOARDING IN CALL OF DUTY MODERN WARFARE 2! 🚨 THIS HAS GONE TOO FAR. ITS TIME TO PACE THE FRONTIER. @DarioAmodei @sama @elonmusk @theo pic.twitter.com/vYTS2YnJKG

— chasm (@chasmmmmmmmmmmm) September 27, 2026

Minecraft vs Elden Ring

Perhaps the most viral of all the video game merges is Minecraft inside Elden Ring.

With this mod, players can not only use Minecraft weapons and teleport with an Ender Pearl, but also access 1,600 Minecraft items, build fully functioning redstone contraptions, and even enter creative mode. Mobs can be spawned using eggs, meaning creepers can be unleashed against Elden Ring's iconic boss Malenia. In other words, fully automated redstone machines can run inside Elden Ring's world.

Bored of the Minecraft toolkit? The mod also allows Black Ops guns to be added, so players can quickly switch between Minecraft and Call of Duty weapons in the heat of battle.

Unfortunately, its creator, Toby Jacobs, has yet to release the mod to the public as of publication. He says he is open to the idea, but notes he would have to create a Windows port, as it was developed on Mac—making a public release one of the storylines to watch.

I put the entire of game minecraft into elden ring as mod. its runs on Mac. pic.twitter.com/CojefjxtLn

— Anime Girl Worshiper (@TobynJacobs) September 29, 2026

Spider-Man in Batman's hometown

In possibly the most glaring case of copyright infringement among the bunch, Marvel's Spider-Man can be seen swinging through Batman's Gotham City thanks to another viral mod.

"Marvel and DC are friends now," one X user posted. "Wait 'til I get a DMCA," the mod creator replied, joking about the potential infringement. The quip gestures at a real constraint: fan-made mods of commercial games occupy a legal gray area, and publishers have historically used DMCA takedowns against projects they consider infringing.

you all, mind telling me what spiderman is doing on batman? pic.twitter.com/M0cdJlU5Um

— MotionViz (@Motion_Viz) October 2, 2026

Trickshotting Minecraft villagers

One modder added Call of Duty: Modern Warfare 2 weapons into the world of Minecraft and set about trickshotting villagers with the iconic Intervention sniper rifle.

The villagers did not pose much of a threat: the player hit a 25-kill streak and called in a tactical nuke. Yep, in Minecraft.

is this the best aura flip pic.twitter.com/jNBTLEkxT5

— MotionViz (@Motion_Viz) October 7, 2026

Mario Kart in Call of Duty Zombies

Finally, gamers have managed to put Mario Kart into the Call of Duty: World at War Zombies game mode. Players are tripping up zombies with bananas and driving over them to rack up kills.

Mario Kart in Call of Duty: World at War zombies pic.twitter.com/UxHNTiJ5Fb

— ModernWarzone (@ModernWarzone) September 30, 2026

"[We got] Mario Kart in World at War Zombies before GTA 6," one X user joked. "WHAT THE FCK IS GOING ON," another shouted.

Well, now you know.