An expansion pack is an additional set of content designed to enhance a video game, board game, or other entertainment products. These packs often introduce new features, characters, levels, or storylines, allowing players to experience more gameplay beyond the original release. Expansion packs can be purchased separately and are typically compatible with the base game. In the world of video games, popular titles like The Sims and World of Warcraft have released numerous expansion packs that add depth and variety. Similarly, tabletop games such as Catan also offer expansions that introduce new mechanics and strategies, enriching the overall gaming experience.