The "hidden capsule items" are recurring themes throughout several of the Mega Man X games. They are all capsules that are hidden well within one of the final stages of the game, and have a certain requirement for the capsule to appear. The first three hidden capsules bestow X with a powerful attack, and the subsequent two grant X with a powerful armor. These special upgrades cannot be saved by passwords, so, if the game is reset, the player must replay the level again. The upgrades from X5 and Maverick Hunter X are exempt to this, since such games omitted passwords in favor of the console's save features (the PlayStation and the PSP, respectively).