MUDs used to be games, too.

GameServ functionality

psyced was once used as a gateway to a game server system, using the implementation of a daemon in d/gameserv.c and a special place variant called place/gamespy.c.

You can activate this code using

#define GAMESERV

before #include "place.gen"

No idea if it works and what it does, but the source code suggests it is familiar with