Sub-Q's Interactive Flash Love Jam
The announcement from Sub-Q includes two options, the actual game jam at itch.io, or a proposal option similar to their usual proposal submission process. The theme is love of any sort, and there’s a word limit: the interactive stories can present only 1000 words of content to the user.
I’m thinking of it as a flash fiction market on that account, and I’m hoping it also means that the usual structural requirements (or heavy-handed suggestions, if you prefer) one finds in hypertext markets like Sub-Q and Choice of Games won’t apply—so I may even submit. If you’re new to interactive fiction, they sound quite supportive and you should probably try it, too.