Is it possible to implement this kind of system? While you already in pvp mode you can click the person to request 1v1/2v2/4v4/8v8 pvp but other players can't attack or disturbing you while pvp. When it done you can back duel with other players. It's something similar like guild war except you don't have to be in guild.
i don't think it cant be, since u attack anyone that u desire, even with the pk system, it wont request battle
m,any mmorpgs have this system
sro, apparently is just to grind and murder XD