I wonder if there should be a fifth category. It seems it is possible to not answer the mandatory question of which category of gen ai was used. Leaving us with games that have the "ai assisted" tag, but none of the others.
Since this is not positively filterable, this is meaningless and juding by the wording, it seems like a bug. And because the filter is called ai assisted, it might be rather confusing for users.
On the other hand, if other ai usage should be possible to answer, the questionaire should make this option clear. But since all this is asset centric, I have yet to come up with a meaningful category that is not covered by the existing.
Playtesting came to mind. But this is not covered at all. As an analogy, movies usually get shown to a test audience. And the movie might be modified based on the reactions. But that test audience did not create any part of the movie. Beta testers of a game might get thanked, but if one of the beta testes was an ai system, would that somehow make the game having gen ai content?
If we forget about science fiction tech like simulated smell, there is only visual, audio and logic. There might be haptic, but you can boil that down to instructions which would be logic again. And logic is divided into narrative and code.