Many free NSFW content that was previously un-indexed (related to 2025 appeasement of payment processors who tried to go to war with both Steam and Itch over user generated free expression), became indexed again very recently if you check the admin posts.
Viewing post in My game suddenly get attention
I have not been following closely enough to know, but the post about the indexing change that likely impacted your game is here: /t/7172464/october-updates-on-indexing