IdleWorlds
RPGAn old-school text-based MMORPG in the browser where your character keeps progressing while you're offline.
CodexBrowserEnglish
No ratings yetmatduke
Plays instantly in the browser
Play free — official siteIdle Browser Games Made with AI
VibeGameDB lists 8 games in this group, 24% of the 34 games on the Idle page. Each one has a source for how it was made. The most common engine is No engine (HTML5) (38%). 8 are free or free to play and 0 are paid. The most recently added is 大航海群像志 (November 2026).
- Games
- 8
- Free / paid
- 8 / 0
- Most used engine
- No engine (HTML5)
- Last updated
- Nov 4, 2026
Engines (top 5, where disclosed)
- No engine (HTML5)3
- Three.js1
Platforms (top 5)
- Browser8
- itch.io2
All 8 games
Ordered by editorial score, then player rating, then release date. Open a game for its sources.
Chip Fab Story
SimulationA real Famicom/NES game about running a chip fab from 1971 to AI superintelligence, wrapped for phone browsers. The developer says it was built entirely inside the Codex app, and lists Codex on the team.
Codexitch.ioBrowserEnglish
5.0/5itch.iodamijin
Plays instantly in the browser
Play free — official site
ヒマネジ
Casual · SimulationTap machines to make screws, grow a factory and launch rockets across six stars in this free browser idle clicker; its developer says Claude Code implements it and Codex reviews.
Claude CodeBrowseritch.ioEnglish
4.0/5itch.ioレノン
Plays instantly in the browser
Play free — official siteFree
大航海群像志
Simulation · StrategyUnofficial · third-party IP
A free idle age-of-sail trading game in the browser, set from 1602, where you assign your fleet's tasks and let them run; the developer says it was vibe-coded over a weekend on the gameplay skeleton of 大航海时代 4 (Uncharted Waters 4).
Undisclosed AI toolBrowserEnglish
No ratings yetT800ai
Plays instantly in the browser
Play free — official site
人月カンパニー
Simulation · CasualA free idle game about growing a tiny contract software shop into a listed company, with Brooks's law from The Mythical Man-Month built into the rules. The developer left the implementation to Claude Code.
Claude CodeBrowserJapanese only
No ratings yetaki
Plays instantly in the browser
Play free — official site
HanGrid
Puzzle · CasualA free browser idle game about buying Chinese-character components and placing them so neighbours form characters; built in an afternoon with Claude Code running DeepSeek v4 Flash.
Claude CodeBrowserEnglish
No ratings yetchunq
Plays instantly in the browser
Play free — official site
Burn Heroes
Action · RPGA free idle multiplayer RPG in the browser: level up, rebirth, fight bosses and other players in real time.
CursorBrowserEnglish
No ratings yetMartin Tale
Plays instantly in the browser
Play free — official site
Graveacre
RPG · SimulationA free pixel-art idle survival game in a French valley overrun by the dead: pick what your survivor does and they keep at it while the game is closed. The developer says Claude Code wrote most of the code.
Claude CodeBrowserEnglish
No ratings yetJuicedead
Plays instantly in the browser
Play free — official siteFAQ
- How many idle browser games were built with AI coding tools?
- VibeGameDB lists 8 idle browser games whose developers say they were built with AI coding tools, each with a source for that claim.
- What engine do most idle browser games built with AI coding tools use?
- No engine (HTML5): 3 games (38%). Games whose engine is not disclosed are not counted.
- How many are free?
- 8 of the 8 are free or free to play; 0 are paid. Prices are recorded per store.
- Which game was added most recently?
- 大航海群像志, added in November 2026.