Open-Source Games Made with Claude Code

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

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A cosmic arcade shooter whose "designer" was a dog typing on a keyboard.

Download required

A traditional browser roguelike made with Claude Code by a Japanese novelist.

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

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A cyberpunk 2D platformer in the browser, coded in a day with Claude Code.

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

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id Software's Quake, ported to JavaScript and Three.js with Claude Code.

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A pixel-art survivors-style WeChat mini game that the developer says Claude Code built overnight.

Mobile app

A one-minute phone game about stamping five approvals on a fictional request form, each tilted in a bow toward the president. The developer says the code was written with OpenAI Codex and Claude Code.

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Dive into a blue cove, photograph sea life for your field guide and gather the memory fragments of an island lost to the sea, in a calm 3D browser game.

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A cute mobile-first adventure in the browser: fight real-time battles, chop and mine, craft gear at the Forge and rebuild a village on the way to a dragon.

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A 3D browser roguelite: a small brass machine with a sword, a gun and a laser cuts its way out of a castle-machine.

No download needed

A free text adventure about an AI that wakes each day with no memory of yesterday, written by Claude Code left to its own devices.

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A small top-down rally game with a diorama look, free in the browser: five cars, six stages, weather, times of day and a short career against ghost rivals. The README says Claude Code with Opus 5.5 wrote almost all of it.

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Paddle into massive waves, carve across the breaking face and collect stars before the foam swallows you.

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Sean Barrett's roughly 20-year-old laser-and-mirror puzzle game Chromatron, recompiled from its original binaries with AI and Ghidra into a near pixel-identical Rust version.

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A top-down 3D space game in the browser: build your ship from parts on a grid, mine, trade and fight pirates in an endless universe. The developer designs and decides; AI coding agents (Claude Code) write the code, art scripts and music.

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A breakout game with glass bricks that crack where the ball hits and shatter with a metallic clang. The README says not one line of the game's code was written by a human.

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A four-rung playing-card guessing game you will almost certainly lose, in three deliberately niche visual themes. The README says Claude Code wrote all of the source code.

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A hardcore 2.5D pixel dungeon game for PC: go down with one lantern, build your own dungeon from the loot and dare friends to clear it; the solo developer says Claude made all of the code.

Demo available

Reversi with flowers instead of discs: red dahlias against blue nemophilas, with petals scattering as each captured flower turns. The developer says Claude Code wrote all the code from a phone chat.

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A free retro first-person shooter for the browser, a homage to the shooters of the 1990s: three key-and-door levels in an infested forge, five weapons and code-generated everything. The README says it was developed with Claude Code from the author's specifications.

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A small 2D side-scrolling souls-like demo in the browser, with grappling, a day-night cycle and a built-in map and body editor. The developer says it is mostly coded with AI agents (Codex and Claude).

No download needed

A dark fantasy twin-stick shooter for phones: a lone wizard in a dead clearing at midnight against waves of undead, a Lich and a Bone Colossus. The developer vibe-coded it with Opus 5.5 in Claude Code from one prompt and a handful more.

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A low-poly 3D tower defense on the Bosphorus: build archers, cannons and tar cauldrons along two roads and hold a seaside fortress for 15 waves. The README says Claude Opus 5.5 built it with Claude Code from one prompt.

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Tap to flap and dodge walls and enemies as a little bird pilot, then take on 11 boss battleships across a four-chapter story. The developer says AI (Claude Code) wrote most of the code and most of the 3D models.

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A one-button browser game about riding out waves of new technology while keeping human flourishing alive, built from a professor's research. The developer asked Claude Fable 5 in Claude Code to research, design and code it.

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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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Walk a tiny planet you can circle in about a minute as its last lamplighter, find the nine beacons that have gone out and bring the land back to life. The README says Claude Opus 5 built it in one unattended Claude Code session from three prompts.

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A mazing tower defense in which the last light in the world holds out for thirty nights against shadows from the rifts, with five more seasonal campaigns. The README says Claude, running in Claude Code, designed and wrote the whole game autonomously from a single prompt.

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Pick one of seven cars and drive a procedurally generated coastal city with simulation-grade physics, police chases and a helicopter at three stars. The README says Claude Opus 5.5 wrote it in Claude Code and nobody edited the code by hand.

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A zero-gravity team shooter: freeze the enemy squad or slingshot through the debris arena into their breach room.

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A browser typing runner: every correct letter carries the Claude mascot forward, Space jumps over creatures, and a pixel-art wave closes in from behind. The README says Claude Opus 5.5 built it in Claude Code in one session of about 45 minutes.

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A free multiplayer first-person shooter for desktop and phone browsers, solo against bots or online with up to 8 players. The developer says almost everything is code written by Claude Code, with three.js and no game engine.

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A free, open-source survivors-style roguelite starring a cockroach in the sewers, playable in the browser or as a desktop app. The developers say they built it together with Claude Code, Codex and Copilot, spending most of their own time on design and testing.

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A laser dry-fire shooting game for Windows in which your monitor is the target and a webcam scores the hits. The README says the whole thing was written by Claude Code.

Download required

Ride a magic leaf down a hillside town as a tanuki: loops, wall runs, wire grinds, homing attacks and a runaway truck on your tail, in a 3D browser game.

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A 2002 student space shooter written in x86 assembly, ported to C and WebAssembly with Claude Code so it plays in the browser again.

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A free first-person party dungeon crawler in the style of the 1985 classics, with original content, chunky Amiga-era pixels and a synthesised chiptune score. Built as a demo project to test Claude Fable 5, with the code produced in Claude Code sessions.

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A minimal 2D hero shooter: one human and five bots fight 3v3 over a single control point with tank, damage and healer heroes.

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A very small turn-based 4X in the browser: two workers, a 5×5 board and 15 technologies, racing a CPU city for food, production and gold. The developer made the design decisions and left the implementation to Claude Code.

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