Civ1 Intro Recreated by Opus 5

Karpathy gave Opus 5 the first paragraph of LOTR and asked for a three.js render. We pointed it at the 1991 Civilization intro instead.

Here is what it came up with after 1 hour 15 minutes:

Karpathy gave Opus 5 the first paragraph of LOTR and asked for a three.js render.

We pointed it at the 1991 Civilization intro instead. Here is what it came up with after 1 hour 15 minutes:

~5,400 lines of procedural code and zero assets. No models, no textures, no sound files… https://t.co/IOPmOynz59 pic.twitter.com/PPGwPVn03Q
— CivFanatics (@civfanatics) August 4, 2026

Discuss on the forums here.