Boss Endurance, also commonly referred to as Boss Rush, appears in many Kirby games. It is a sub-game where Kirby must battle all the bosses from the game, usually with little to no recovery items. In some games this mode must first be unlocked (usually by completing story mode) before the player is able to attempt it. In general, the bosses are fought in the same order they were in story mode. However in some cases they might be fought in a random order. In the more current games, the Boss Endurance sub-games usually have a specific title screen for it that displays each of the game's bosses.