Unlockable content refers to additional features, items, or levels in video games that players can access by completing specific tasks or challenges. This content is often hidden at the start of the game and can include new characters, skins, or gameplay modes, enhancing the overall experience. Players typically unlock this content by achieving certain milestones, such as reaching a particular level, completing quests, or earning in-game currency. Unlockable content encourages engagement and replayability, motivating players to explore the game further and discover all it has to offer, similar to how DLC (downloadable content) expands a game's universe.