Multiplayer Browser Games Made with AI

Look around a 360° historical scene, then guess when and where it happened.

Plays instantly in the browser

Shopping-cart racing at rocket speed through a haunted supermarket — second place at Vibe Jam 2026.

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A top-down 2D browser racer with time trials, online races and global leaderboards, and Vibe Jam 2026's “Most Portal Transfers” award.

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Two-phone pong where the ball travels between devices as sound.

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Race other players to the top of a giant beanstalk as a small beetle.

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A free online tank shooter, on Steam and in the browser, built almost entirely with Claude Code.

Plays instantly in the browser

A multiplayer MUD in the style of the 1990s, with room art and sprites over the text log.

Plays instantly in the browser

Fly a biplane, a magic carpet or a boat around a tiny world and save it from the moon.

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A Command & Conquer-style browser RTS, written mostly by Claude Code agents.

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An old-school text-based MMORPG in the browser where your character keeps progressing while you're offline.

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A real-time online card battle game in the browser, built with Claude Code.

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A Warcraft 2-inspired fantasy RTS that runs free in the browser, built with Claude.

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A free, open-source browser MMORPG in the style of classic-era WoW.

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A 1992 online text RPG, rebuilt from old scripts by Claude Code.

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A free multiplayer flight sim in the browser, built by one person in Cursor.

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Go with ordinary rules, where capturing more stones at once sets off bigger effects; the developer says Claude built it from requests, in about two days to the first public version.

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A free online 8 v 8 bird shooter in the browser, with rifles, miniguns and rocket pods over an overgrown city. Built as a 24-hour challenge; the credits say Claude wrote every line of code.

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A free multiplayer brick-building world in the browser: build brick by brick on a shared map, then drive, fly, ride the bus or race. The developer says it was built with Claude Code (Opus 5.5).

Plays instantly in the browser

A free first-person team spellcasting battle in the browser: three orders of mages guard their shrines and try to break the others'. The developer says Claude Code writes almost all of the code.

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A daily logic puzzle: place rooks, bishops and knights so every numbered square is attacked by exactly that many pieces. The solo developer says the code was almost all written by Claude Code.

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A free browser property-trading board game with online matchmaking, set in a city called 好运之城 (Lucky Town); the developer says it was made over a weekend with "GPT-6 Astra" and later calls it vibe coding.

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A free 3D voxel MMORPG in a browser tab, with six classes, dungeons, a 12-player raid and battlegrounds. The solo developer says Claude Code wrote all of the code.

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A full-physics curling sim with seasons, a rink designer and a coaching mode, made by a club curler who leaned on AI to build it.

No download needed

A retro panel-swapping puzzle duel: match three, chain combos and drop garbage blocks on a friend, an online opponent or the CPU.

No download needed

A free browser party game of bluffing with your own phone photos: everyone shows a photo for the theme and tells its story, but the werewolves have secretly swapped theirs. The developer says development switched to Claude Code writing the code in June 2025.

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Fly a lone ship through procedurally generated worlds of glowing blocks, gathering light to fight, alone or with other pilots.

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A fast online third-person shooter in space: slide, grapple and race to 100 kills.

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Glide over a Greek-myth world and strike down other players in an online aerial arena.

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A six-degrees-of-freedom arena shooter in the browser, with generated art, sound and music and peer-to-peer multiplayer.

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Fly a bee, collect flowers and get back to the hive before the wasps get you.

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A free top-down squad shooter in the browser after Cannon Fodder: six men, one hit each, fifty missions.

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A free pixel-art ski jumping game for desktop and phone browsers, with a daily jump in the same wind for everyone and a World Cup that follows the real calendar. The developer says it was built with Claude Code.

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A free idle multiplayer RPG in the browser: level up, rebirth, fight bosses and other players in real time.

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A free multiplayer browser game about cats with propellers on their paws, brawling for catnip over tropical islands. The developer says the main tools were the Claude models Opus 5.5 and Fable.

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A card-and-board duel on a 5×5 grid where cards name the piece you move and both sides reveal at once; its developer says Claude Code built the trial version in about three days.

No download needed

Strangers across the internet fight the same AI boss with one shared health bar; each time it dies, it comes back stronger.

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A free-for-all multiplayer FPS in the browser, built by a father with Claude while his kids acted as product managers.

No download needed

A roguelike shooter through a derelict space station: scavenge weapons and perks, fight deck by deck, reach the escape pod.

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Ram, boost and wreck strangers' cars in a dusty online arena. No install, no sign-up.

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A free top-down co-op horde shooter in the browser: your office job has been automated, so herd the robots into the shredder. The developer says Claude Code did basically all the work.

Plays instantly in the browser

Drop-in co-op wave defence: catch spirits, feed the shrine and bring down the obelisk.

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Chaotic ragdoll brawls for up to four players: punch, grab, throw and knock your friends out of the ring.

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A free multiplayer meme game in the browser: drive, boost and fly a sports car through stunt courses, highways and a neon city. The developer says Codex with the model Astra did most of the work, and Claude Code polished the graphics.

Plays instantly in the browser

A free open-world crime sandbox for the browser on a low-poly island, with a 31-mission campaign and eight-player online deathmatch. The developer says the AI model Astra wrote all of the code.

Plays instantly in the browser

An online survival game in a procedurally generated world: gather, craft, build and fight with other players.

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A three-turn ink duel in the browser: both players draw a circle at the same time, big and faint or small and dense, and the denser ink takes the ground. The developer says the implementation is done with Claude Code.

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Virtual table football in the browser: steer the rods with your mouse, first to five goals.

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A multiplayer race to $10K MRR in a seedy motel: hustle, steal, fight or gamble your way out.

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A cozy multiplayer sheep-farming game in 3D in the browser: build a shelter, raise 12 breeds of sheep, grow crops and share a farm with friends. The developer says GPT 6 Astra in Codex made it one-shot from a single /goal run.

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A 50-marble royale in the browser: race down wooden-block courses, draft perks and survive the cut at every checkpoint. The developer says it was made with Claude Code.

Plays instantly in the browser