The maximum is a party of 3 and we don't intend to increase it except for specific quests. That being said you can add more companions with the cheat code. That's not the intended gameplay but it works fine.
If you have a party of 5, all dialogue of all 4 female characters will be triggered, right? Can i have know how to do that, i would love to see all the reaction all at one, not through multiple playthrought. And thanks you for making the game, it is so great!
