For what I understand is, If you create a game in D3 you choose from what quest you want to start at. If the game is public other players that are up to or past that quest can join your game? But what happens if you make a game and start it say quest 2 and you play and beat that quest and continue beating 2 more quests, and someone wants to join the game, will that person needs to have quest 4 or can he be up to quest 2, because the game was started at quest 2? Need some info .. Thanks