Finally! The GTA:IV multiplayer mod we've all been waiting for. MultIV is a free online multiplayer modification for the Rockstar title Grand Theft Auto: Episodes from Liberty City. You and up to 255 friends and foes in a server shooting the sh*t out of each other. What more could you want? Free The mod is, and always will be, 100% free to play. All we ask is you support the game developers by purchasing GTA: Episodes From Liberty City. Limitless A ton of scripting functions. Your server game modes and features are limited only by your imagination.