u/ActionLittle4176

https://reddit.com/link/1tu2d3p/video/cs6pxozjyp4h1/player

Partly as a challenge, partly as a learning exercise (and to find out whether my amateur game-design knowledge would give me any shortcuts), cooked this game demo un one month.

It makes sense as a starting point: moving an object along a track is one of the easiest ways into a game, and pure vibe-coding territory. So a few weeks ago I got going, with Codex on GPT-5.5 high and Magnific por 2D and 3D assets, and sound effects from Magnific stock. It was very valuable the GPT Gen 2 in 4K, not available in Chatgpt (not in that resolution), and capable of creating textures and 360 panoramas for the backgrounds. Also Tripo3D was used for creating the 3D models from 2D GPT Gen 2 concepts (and Seedance 2.0 for the game logo video).

I had old-school futuristic racers in mind from the start (the ones I played as a teenager: Wipeout, F-Zero, Xtreme-G, Star Wars Racer...) so I took that as the foundation and started laying bricks. Within a few days I had a track and a bare, textureless little ship that at least responded to the controls. Then, little by little, prompt by prompt, across spare hours on weekends… a month later, it had turned into this.

Obviously you can't design every part of a game like this just by typing.

But what astonished me was building my own custom game editor (!) shaped exactly to my needs, and extended on the fly as new problems came up.

https://reddit.com/link/1tu2d3p/video/r9rfihn3zp4h1/player

It's a super-alpha with plenty still to fix, but I'm honestly amazed I've gotten this far, to a fully playable, even fun version, in a single month, without writing a line of code, just with Codex for coding and Magnific for all the visuals and sounds.

The main technologies are:

Strict TypeScript

Vite as the build tool and dev server

Three.js for direct 3D rendering

Rapier 3D via u/dimforge/rapier3d-compat for physics

HTML/CSS overlays for HUD, menus, and UI

Web APIs for input, audio, PWA/offline support, etc.

Optional runtime assets such as GLB/GLTF models, textures, audio, HDRI, and video

Assets: mainly GPT Gen 2 for first design, then Tripo3D.ai to convert them to 3D models. Also GPT Gen 2 for 360 panoramas and textures (base, normal map, emissive, roughness...), it's really good for that, too. Magnific sound fx bank and Suno for the music.

If you'd like to give it a go (alpha version, remember): https://fm1.moises.cloud

https://reddit.com/link/1tq5hos/video/u8euuk6n2w3h1/player

For a while now I've been watching X posts or reddits like this with quiet curiosity, and they finally pushed me to try something similar myself. Partly as a challenge, partly as a learning exercise (and to find out whether my amateur game-design knowledge would give me any shortcuts).

It makes sense as a starting point: moving an object along a track is one of the easiest ways into a game, and pure vibe-coding territory. So a few weeks ago I got going, with Codex on GPT-5.5 high, Magnific for 2D assets, and Tripo3D to turn those into 3D models.

I had old-school futuristic racers in mind from the start (the ones I played as a teenager: Wipeout, F-Zero, Xtreme-G, Star Wars Racer...) so I took that as the foundation and started laying bricks. Within a few days I had a track and a bare, textureless little ship that at least responded to the controls. Then, little by little, prompt by prompt, across spare hours on weekends… a month later, it had turned into this.

Obviously you can't design every part of a game like this just by typing.

But what astonished me was building my own custom game editor (!) shaped exactly to my needs, and extended on the fly as new problems came up.

https://reddit.com/link/1tq5hos/video/u8535k133w3h1/player

It's a super-alpha with plenty still to fix, but I'm honestly amazed I've gotten this far, to a fully playable, even fun version, in a single month, without writing a line of code.

If you'd like to give it a go (alpha version, remember): https://fm1.moises.cloud

#codex #magnific #vibecoding #vibegame