Good question! Spooky content is good - anything that's scary, disturbing, or just plain weird is totally fine! But at the same time, because anyone could play the games, it'd be considerate to just flag anything that could be a bit too much - stuff like fia glas mentioned above. Thanks for asking!
I've truncated the "all folks" comment from the rules - I think it's probably best to trust that everyone will just use common sense when publishing their stuff.
