there's now Grand Theft Auto IV: Complete Edition: -75% $9.99 USD Grand Theft Auto IV and the episodes – The Lost and Damned & The Ballad of Gay Tony. http://store.steampowered.com/app/901583/
well, it will depend who will make the game mode! Squirrel give support to create many things! if you want some roleplay you can create your own roleplay/gamemode. so wait release and you will see creative servers