Open-world games hand players a vast, explorable space and the freedom to roam it at their own pace. The monster-filled countryside of The Witcher 3: Wild Hunt, the sprawling city of Grand Theft Auto Online, and the irradiated wastes of Fallout 4 all reward curiosity with side quests, hidden discoveries, and emergent moments. Expect interconnected maps, nonlinear progression, and a strong sense that your choices and detours shape how the adventure unfolds.