Purple patch is a colloquial term for a pre-Issue 1 update in which the developers increased the difficulty of enemies higher-level than the player. "Purple" refers to the Con System in the game where enemies four or more con levels will have their name appear as purple in the target window. Before the patch was implemented, full groups of heroes were often able to defeat enemies that were ten levels higher than them. When contemporary forum-goers talk about the "purple patch", they may be referring to the way player character effectiveness scales against different-level enemies: