On another booru some threads are games such as "Would you share a bath/shower with the character above?", "Which of the two characters above would you sleep with?" etc, and I was wondering if SFW versions (would you date a character, for example), or other kinds of threads like this are allowed, or do people here not care about that.

As long as it doesn't go against our TOS, then it is most definitely allowed.

And it also Sounds like alot of fun. Itll be interesting to see what games you and others come up with!

Cool.
I'll start with the SFW versions (although I suspect that they might not be as popular as what they are based on) first, then I'll do any others I think are good ideas.

Sounds great with me!

Even if its not popular. i believe a good amount of people will enjoy it.