Sexual abuse (rape, sexual activity concerning non-sapient animals or underage characters, etc.) will not be considered for inclusion in any of my games, because I don't wish to normalize abusive behavior. Bestiality and pedophilia are explicitly forbidden forever.
Uncommon kinks (gore, hard vore, macro/micro with crushing, watersports, scat, etc.) are all fine, but will only be exposed to players who opt into seeing them.
If you're uncertain, always feel free to ask. I won't judge.