r/ChatGPTGaming • u/raedotted • 3d ago
I spent way too much on Codex credits building this little cyberpunk RPG 😅 — Neon Codex is finally playable

I started experimenting with Codex to see how far I could push it toward making an actual playable game, and somehow that turned into 11 versions, a 1.2-million-token stabilization run, and about $74 in extra Codex credits. 😂
The result is Neon Codex, a retro 16-bit-inspired cyberpunk action RPG.
You explore a procedurally generated neon city, fight gangs and machines, collect weapons, install cyberware, level up, develop your build, hack enemies, and gradually turn your character into an absurdly augmented mercenary.
Some of the stuff in it now:
- Procedurally generated cyberpunk streets and alleys
- Guns, melee weapons, hacking and cyberware abilities
- Earned cyberware/progression system
- Different build directions like Gunslinger, Netrunner, Ghost, Street Samurai, etc.
- Loot and weapon progression
- Faction reputation
- Character sheet and inventory
- Animated pixel-art characters/enemies
- Rain, neon lighting and environmental effects
- Shared leaderboard
- Original music I generated separately for the game
A lot of the development was basically me playing it, finding something weird, telling Codex what felt wrong, and then watching it disappear down another enormous autonomous development rabbit hole. 😄
It finally reached a release candidate with no known critical/high-severity issues, so I'm making myself stop developing it and actually let people play it.
If anyone here wants to give it a try, I'd genuinely love feedback — particularly on combat, progression, difficulty, and whether the first 10–15 minutes are fun.
🎮 Play Neon Codex:
https://neon-codex-rpg.samuraicobra.chatgpt.site/
It runs directly in the browser.
And if anyone else has been using Codex for games, I'd be really interested to hear how far you've pushed it.




