Have an agent build and fix a game explosion effect
A game developer had Claude Code build an explosion effect in Unity; the author says it captured still images of the effect and kept fixing it without help.
Done with Claude Code
What they did
A developer asked Claude Code to build an explosion effect in Unity, a tool for making games. The agent built the effect, then took still images of it as it played. It looked at those images and kept making fixes on its own. The surface images used in the effect were made separately with Codex's image tool.
How it went
The author says the agent kept fixing the effect without help. He posted the first and final versions side by side in the thread.
Worth knowing
The key is that the agent checks its work by looking at pictures of the effect. It doesn't just change settings without seeing the result.
Try it yourself with Claude Code
In my Unity project at [project path], build a [effect type, e.g. explosion] using the Shuriken particle system. Use the textures in [texture folder]. After each change, play the effect, capture several frames and review them against this goal: [describe the look, timing and colors]. List what looks wrong and fix it, then repeat until it matches or you have done [number] rounds. Show me the first and latest frames and a summary of the changes before you modify any existing prefabs or scenes.
Swap the highlighted [parts] for your own details.
Source: X · @excifroge · Oct 15, 2026
Written with AI assistance from the original post and checked against our editorial guidelines. Results are as reported by the source, not independently verified.
