I think for instances like this, it would be easier for a person to just modify the source quickly. For instance, look how PK is setup.         if( battle_config.pk_mode )             map[i].flag.pvp = 1; // make all maps pvp for pk_mode [Valaris] We force all maps to PvP mode at loading in map::map_flags_init(). If you want to do like what you said where you'd rather allow branches on specific maps only, then I would do this:         map[i].flag.nobranch = 1; // make all maps unable to use