Not sure if this is what you're looking for, but I'm currently working on a RP setting in which three factions battle each other and a forth outside faction. It's not required but members of each faction can team up, thus could result in multi pred, multi prey or both scenarios combined.<br/>You can read the draft<a class="postlink" href="https://aryion.com/forum/viewtopic.php?f=38&amp;t=27094">here</a>if you're interested.