My gaming group is quite odd, as it turns out. It’s HUGE. When we get everyone, we have 11-13 people.
This is great, but most games are made for 4-8 people. They tend to bog down when you get up above 8, and most pen-and-paper RPG designers aren’t trying to solve the problem of having too many players. This is most likely because the most common situation is the opposite — you have too few players.
Our large games tend to fall apart for a few reasons: