I was wondering about this too because it becomes difficult to define. AI is very helpful at the start for structuring the project, allow you to focus on the meat of the game logics, what % would that assist count? essentially advanced boilerplate. Also researching prerequisites going through documentation for you, answering individual element implementation question with code output, debugging, and generating edge case tests for you that you will prompt/plan out but still AI generated none the less. How much of these are permitted and technically non-infringing in a developer's natural creative input for the game.