Build a splat engine, then let Claude design the game

Opus built a Gaussian-splat 3D engine in ~5 hours; told only the genre, it then made every design decision for a survivors game.

by /u/buak2 Oct 2026

Prompt for your agent

Goal: See what the model designs when I hand it every decision.
Setup: agents used in source: Claude; tools/MCPs stated: Gaussian splats.
Steps:
1. Build the engine first (here about 5 hours and ~20 prompts to tune it).
2. Tell Claude only the genre and to use the engine you just made.
3. Tell it to make all the design decisions and only come back when the whole game is finished.
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Based on: /u/buak — https://www.reddit.com/r/vibecoding/comments/1wvu4u0/made_a_3dengine_that_uses_gaussian_splats_instead/

Steps are from the source. Includes a “Based on” credit line.

I tried this

Tell the next builder. One anonymous answer each; click again to undo.

Agents, models and tools only what the source states

Agents
Claude
Models
Opus 5.5
Tools
  • Gaussian splats

Sources & credit