I’m using $200 a month Codex working on a game for my kids for fun and curiosity since I’m a dev, I’ve played games, but I’ve never done dev for games. and have all night tasks but mostly they’re “spend time tending to and adding stuff to my 3D asset pipeline”. My RTX 5090 runs Trellis2 -> ultrashapes -> Trellis2 -> wiring up rigging and setting up animations.

But like 99% of that task is just Codex waiting for the output. So it’ll run for 12 hours but mostly it’s just setting lots of sleeps. I haven’t gotten close to running out of tokens. The $100 a month codex I hit usage limitations almost immediately, about 3 days in of working like crazy with 10 agents going at once, mostly coding an asset pipeline, I ran into my weekly limit and upgraded. So with the $200 a month plan at 4x more credits I haven’t hit any walls at all and can absolutely cook.

This sounds like you're overcomplicating things a lot and like you're very unlikely to be learning anything useful, I would suggest making something simple yourself to get a handle on what making the different parts of a game actually means in practice.

Knowing LLMs and their output I would also bet that you're getting nonsense output that sucks.