Well perhaps some of it involves collecting a certain set of items kinda like how some of the zelda games work. (I guess the anime did it too with those clock pieces in the filler arc)<br/><br/>So yeah, the items in question could be anyhing. Parts of a seal or key to unlock the evil prophesy. Fairy tail trying to stop it while the bad guys try to unlock it. Or maybe its a weapon to take out the big evil, so roles are reversed; We want it to use it, the bad guys wanna destry it.