No Blender, no Unreal Engine. Just vibe coded my own browser based 3D Engine; Worldfold WORLDFOLD - zamta.io . A new full 40 minutes poolrooms experience is now on YT. Link in the comments. Done with Claude Opus 5.5 in Three.js .

Watch the full film in 4K on YT:

@zamta_io @threejs know a creative technologist building real-time 3D browser stuff in three.js who'd put this engine through actual work. couldn't get a dm through to you though.

@zamta_io @threejs Really great art and style. Looks a lot more interesting than just another backrooms yellow wallpaper story.

@zamta_io @threejs Owning the engine means when something renders wrong you can ask Claude why, instead of digging through someone else's settings menus. How did performance hold up once the rooms got big?

@zamta_io @threejs yes and build own features in it.

@zamta_io @threejs dev 3d

@zamta_io @threejs Now That's What I Call Art Direction 2026!

@zamta_io @threejs Thanks Greg 🫡

Btw. Join here to test my engine soon in the browser:

@zamta_io @threejs Link to play this browser 3D engine… videos can hide the reality of truths.

@zamta_io @threejs soon

@zamta_io @threejs THX!!

@zamta_io @threejs finally a maze where closing the tab counts as finding the exit

@zamta_io @threejs this is so cool! are you keyframing those camera paths or walking them live like a game cam?

@zamta_io @threejs Thanks. It's live in the browser and recordet as take.

@zamta_io @threejs zamta posters in the poolrooms, nice touch

@zamta_io @threejs what prompts to get 3d assets like that

@zamta_io @threejs wow, go back for 20 years, make our own 3d engines again

@zamta_io @threejs yes unbelievable.

@zamta_io @threejs this is awesome...

@zamta_io @threejs This is amazing. Followed so I can see what's next!

@zamta_io @threejs How did you create the models?

@zamta_io @threejs I have a build in level editor.

@zamta_io @threejs A full 40 minute poolrooms experience running in a browser engine you vibe coded yourself is wild. Curious how much of the three.js side Opus handled versus your own tweaks.

@zamta_io @threejs @DoctorX2026

@threejs @zamta_io Looks great, but you just lost the Don’t Build Your Own Game Engine challenge :)

@threejs @zamta_io why? custom engines have a bright future I think. you build in just features you need.

@threejs @zamta_io Yeah, that’s the trap :) You start building engine features instead of game features. One thing leads to another… Next thing you know, you wanted to make a simple 2D platformer, but your engine already has voxel GI with rays…

@threejs @zamta_io It's okay, the output I can do with it matters. I can fork at anypoint. But yeah many ways to go.

@zamta_io @threejs A 40-minute poolrooms experience from a browser engine you vibe coded with Opus 5.5 and three.js is a lot more than a demo scene. What was the hardest part of Worldfold to get Opus to build?

@zamta_io @threejs love seeing more people render whole videos in the browser. I make my music videos the same way, three.js + Claude:

@zamta_io @threejs why browser based tho ? it would be 100x more efficient if it was desktop app written in C or C++ ?

@zamta_io @threejs The project escalated a bit over time. And I want to see whats possible in the browser.

@zamta_io @threejs What knowledge is required to build this? Amazing…