Open-world refers to a type of video game design that allows players to explore a vast, interactive environment without strict linear progression. In these games, players can roam freely, complete quests, and engage with various elements of the game world at their own pace. This design encourages exploration and often includes side missions, hidden items, and dynamic events. Popular examples of open-world games include titles like The Legend of Zelda: Breath of the Wild and Grand Theft Auto V. These games often feature detailed graphics, immersive storytelling, and a variety of activities, making them appealing to a wide range of players.