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 Games Made with Codex
VibeGameDB lists 5 games in this group, 5% of the 100 games on the Codex page. Each one has a source for how it was made. 5 are free or free to play and 0 are paid; 4 can be played in a browser. The most recently added is Graveacre (November 2026).
- Games
- 5
- Free / paid
- 5 / 0
- Most used engine
- No engine (HTML5)
- Last updated
- Nov 4, 2026
Engines (top 5, where disclosed)
- No engine (HTML5)1
- Godot1
Platforms (top 5)
- Browser4
- itch.io3
All 5 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 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 site
VOLT NOMAD
StrategyA compact incremental boss rush: every click deals damage and builds CHARGE for a growing automatic arsenal.
Codexitch.ioEnglish
No ratings yettsgamestudio
Plays instantly in the browser
Play free — itch.ioFAQ
- How many idle games were built with Codex?
- VibeGameDB lists 5 idle games whose developers say they were built with Codex, each with a source for that claim.
- What engine do most idle games built with Codex use?
- Godot: 1 game (20%). Games whose engine is not disclosed are not counted.
- How many are free?
- 5 of the 5 are free or free to play; 0 are paid. Prices are recorded per store.
- Which game was added most recently?
- Graveacre, added in November 2026.
Related pages
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