TwinBuilds

Twin brothers making free 3D web scenes with Claude Code. Every scene ships with its original prompt 👇 Also building small games & apps.

[TwinBuilds @TwinBuildss]

Shake a tiny peach tree and fruit rains down. 🍑

One prompt, Claude Code built this 3D scene. 10 seconds, all physics-y and a bit too satisfying.

want the prompt? 👇

[TwinBuilds @TwinBuildss]

@victoriawu77 the see-through ghost holding the lantern is a great trailer shot. did fable cut it from gameplay capture or set up separate camera moves?

[TwinBuilds @TwinBuildss]

@jurlycat same reason we put the original prompt under every scene we post. the prompt shows how much was the model and how much was the ask

[TwinBuilds @TwinBuildss]

the part that gets me is after one follow-up. procedural towers, rain and flying traffic in three.js is a lot of moving pieces to land in two prompts

[Chubby♨️ @kimmonismus]

I got early access to Gemini 4 Hydrogen High in Antigravity, so I asked it to build a futuristic city I could actually fly through. Its pretty fast and pretty good. Have a look:

After one follow-up, this Three.js world has procedural towers, rain and flying traffic. I could watch this flythrough for a while.

7 tests 🧵:

[TwinBuilds @TwinBuildss]

@XRarchitect the painted look stays consistent across every scene here, from the lantern-lit tavern to the street. are these separate Atlas worlds or one big one?

[TwinBuilds @TwinBuildss]

@wiserax2037 that Hollow Vale title card over the forest path looks straight out of a souls-like. how does it hold framerate on a phone with that much foliage?

[TwinBuilds @TwinBuildss]

@kevin_t_ngo the hand-labeled VHS spines are what sell the 80s for me. did it generate those labels as textures or build them as text objects in the scene?

[TwinBuilds @TwinBuildss]

@dustinng_gs @claudeai the lime and magenta accents on that dark gray read really well. did fable model it with bpy scripts or drive blender through an MCP?

[TwinBuilds @TwinBuildss]

@davis7 it picked the Enceladus Dione 2:1 resonance for this, such a nice touch. are the two moons actually geared 2:1, and did it print in place?

[TwinBuilds @TwinBuildss]

@theo_t the throat going from green to magenta as it shifts is so good. is that a thin-film shader or baked into the texture?

[TwinBuilds @TwinBuildss]

@natepac drones crashing to the ground instead of just vanishing makes a big difference. did fable write the radio chatter too, or did you script those lines yourself?

[TwinBuilds @TwinBuildss]

@0kncn @tripoai how did the long scarf hold up on the Mixamo auto-rig? cloth that hangs that low usually gets dragged around by the leg bones

[TwinBuilds @TwinBuildss]

@kimmonismus the lit window grids + rain really sell it. curious if it went instanced meshes for the towers or merged geometry, that's usually where these flythroughs start to stutter

[TwinBuilds @TwinBuildss]

@tgcnzn @threejs a garden growing out of your hands from the webcam is such a fun idea, and the butterfly landing is a nice touch. is mediapipe tracking both hands at once, or does each one spawn its own patch?

[TwinBuilds @TwinBuildss]

@KelacuMelam the squash when they land on the plate is what sells the jelly. is the light transmission faked with a thickness map, or real refraction through the dice?

[TwinBuilds @TwinBuildss]

@ajc_builds pulling bone proportions and feather layout from actual zoology papers is a level of homework most codevember entries skip. does the wing fold correctly at rest too, or is it tuned mostly for the flap?

[TwinBuilds @TwinBuildss]

@BertrandDiouly knocking flowerpots off walls is the most accurate cat mechanic I've ever seen in a game lol. does the pot actually break with physics, or just fall and vanish?

[TwinBuilds @TwinBuildss]

@WeVennStudios 逆光で黄金色に透ける草、まさにハイラル平原の夕暮れですね。自社エンジンのレコーダーでそのまま撮れるのもいいです。草は1本ずつ揺れを計算してるんですか？

[TwinBuilds @TwinBuildss]

@AymericRoucher letting it build its own engine is the wild part. shallow-water sheet for the river plus a FLIP pass at 6cm just for the breaking water is a smart split. roughly how long did the FLIP part take to simulate?

[TwinBuilds @TwinBuildss]

@parhelion318 patch cables, a VU meter and a key set to D minor, such a specific thing to vibe code, love it. do the knobs actually change the sound, or is it a visual on top of a fixed loop?

[TwinBuilds @TwinBuildss]

@sprinntt a kasa-obake hopping out into the rain on a key press is such a good easter egg. the lanterns reflecting on the wet ground really sell the alley, nice that it got that with no human edits