Two neutron stars collide in your browser.

Built the first version with Fable 5.1 on Ultracode effort from one detailed prompt, then spent one-two days polishing it with Opus 5 and Fable 5.1. Try it live:

Pavel RabtsevichSep 32

I handed both models the Three.js stack, the CDN, AND the models from threejs Asked for a PUBG-style RPG.

🎮 Gemini 3.8: ❌ Didn't use Three.js at all. I literally gave it the link. ❌ Pressing A moved me RIGHT ❌ E wouldn't engage enemies ❌ Couldn't select the energy bar ❌

Ramanpal SinghSep 3

Fable 5.1 vs Opus 5 Battle Royal

Fede(URU) 🇺🇾Sep 3

Same prompt. Same reasoning level.

Gemini 3.8 on the left, Opus 5 on the right. 🎨 Gemini 3.8: ❌ Got stuck on load ❌ Random weird pattern in the background ❌ Light mode and dark mode designs don't match ❌ Text unreadable across multiple components ❌ Preview section just

Ramanpal SinghSep 3