Strawberry Jam is returning for its seventh year! Participants have the month of February to make a game that you find horny. For inspiration, check out some previous entries (it kinda goes without saying, but the majority of these are NSFW), or read this great post that Eevee wrote about the jam!
Right after that one ends, there'll be a TF-focused TTRPG jam hosted by the team that made To Change. It runs for two months, and asks you to make a transformation-focused tabletop gaming scenario.
I'd totally recommend participating in a game jam in the future if you haven't tried one before, they're tons of fun!