The issue with sonnet 3.5 is, in my limited testing, is that even with explicit, specific, and direct prompting, it can't perform to anything near human ability, and will often make very stupid mistakes. I developed a program which essentially lets an AI program, rewrite, and test a game, but sonnet will consistently take lazy routes, use incorrect syntax, and repeatedly call the same function over and over again for no reason. If you can program the game yourself, it's a quick way to prototype, but unless you know how to properly format JSON and fix strange artefacts, it's just not there yet.