If there was an open world online adventure time game, what would you be? And what’s the first place your visiting why?

And before you choose something like golb or whatever, What you are doesn’t give you any extra power or buffs or whatever, it’s what you do later on like visiting rattle balls for training or visiting Marcaline to become a vampire or training on the battle train for ultimate power or whatever. And everything that was in the show is in the game so you can go wherever you’d like. As long as it isn’t the 50th dead world.