Ported the intro to my three.js game to both @godotengine and @kaigen3d with Claude. 5hr limits prevented me from fixing some things on both ports (Claude problems, not the engines). Noted:
1. Kaigen was way easier to set up for Claude Code.
2. Godot was not able to retain my original game's voice engine and had to resort to Microsoft's. Kaigen kept it.
3. Godot matched the original art style exactly, while Kaigen came out with a softer, more dark tone.
4. Kaigen generally felt much smoother.
5. The Kaigen session cost about 75% more than the Godot one: about 34.6 million effective tokens against 20 million. Kaigen rebuilt things by hand, which takes many more steps.