An "Expansion Pack" is a collection of additional content designed to enhance a video game or board game. It typically includes new features, levels, characters, or items that players can use to extend their gaming experience. Expansion packs are often sold separately from the original game and can provide fresh challenges and storylines. In the context of video games, popular titles like The Sims and World of Warcraft have released numerous expansion packs over the years. These packs allow players to explore new environments, engage with new gameplay mechanics, and enjoy updated graphics, making the original game feel more dynamic and engaging.