I think it's funny how everyone loves servers where a controller or some kind of higher power commands them to do certain stuff or they die.
-Crown's Jailbreak gets 40 people easily
-Black.Box gets 40 people easily
-Falling Tiles servers get 40 people easily if they're done right.
-Betelgeuse hosted a military RP where the officers commanded the grunts to do random stuff. It was 3AM on the default military base map and he had 20+ people at one point