Open source

8 Open source browser games made with AI. No install — play online.

All 8Multiplayer5Vibe Jam53D3

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ShooterNewClaude of TanksOpen ↗Kevin-Liu-01 · Claude/CodexDeveloped with a Claude/Codex pipeline, playable in browser without download.

ShooterNewCORO SOLTO: Treta SupremaOpen ↗corosolto · Claude, Kimi, Codex/GPT, GLMAI-generated Brazilian satire FPS with 44 characters and 5 maps.

ShooterThree.js Quake▶ PlayMr.doob · Claude Codethree.js creator Mr.doob directed Claude through the port; the repo description reads "by @mrdoob with @claude".

ExplorationHalcyonOpen ↗Bill Chan · Claude CodeAn open-source tech showcase; the creator says all ~8,500 lines of code and shaders were written by Claude Code.

PuzzleEyrie▶ Playslowchaz · Claude CodeVibe Jam 2026 "Most Atmospheric" award, ranked 6th of 945 entries.

ActionBeetleJump▶ Playassentorp · Claude CodeVibe Jam 2026 "Rage-Quit" award; the beanstalk is a nod to the classic CS map kz_giantbean.

ShooterUndersphere▶ PlayNoah Whiteson · CursorVibe Jam 2026 "Unique Concept" award.

SailingVibeSailOpen ↗Nicola Manzini · Cursor + ClaudeInspired by Fly Pieter, with the first version reportedly made in four days; one of the first AI multiplayer games to take off in early 2025.