So I offered to start a campaign for some co-workers around the office... less than a week later and I've got about twelve people that want to play. Even splitting this group in half leaves me with more people in EACH group than I've ever DMed for at a time. I'm concerned about boss fights and difficulty scaling for groups of this size. Not to mention the inevitable length of combat instances due to the number of rounds involved. Do you have any tips for larger-than-average groups?
This is a link to a challenge rating calculator, you put in your party number, their average level and how difficult you want the encounter to be and gives you a chart showing how many monsters you can have and what CR they should be, if you want combat rounds to be shorter just use less monsters of a higher CR, otherwise there’s not a lot you can do i’m afraid. Though i’m sure people will reblog and reply with their own ideas and anything i’ve missed. I hope this helps