The term "unlockable" refers to something that can be accessed or obtained only by performing a specific action, usually through completing certain requirements or meeting certain conditions. In video games, for example, an unlockable character, weapon, level, or achievement is one that becomes available after the player has completed a particular challenge or reached a certain point in gameplay. The term can also be used to describe hidden features on electronic devices such as smartphones and tablets, where specific actions must be taken to access additional settings or functions.