Largest Open Worlds by Area

Red Dead Redemption 2 features Rockstar's largest and most detailed open world, surpassing Grand Theft Auto V's 31 square miles, though other games like The Legend of Zelda: Breath of the Wild and Assassin's Creed Odyssey feature even larger maps.

Sources

• The 25 Biggest Open-World Video Games, Ranked By Size - ScreenRant
• Ranking Every Rockstar Open-World Game Based On How Large They Are - GameRant
• Do Rockstar Games create the largest open-world maps in video games? - Pc Gaming
• Red Dead Redemption 2 is Rockstar's BIGGEST Open World Map Ever! (Larger Than GTA V!) - YouTube
• Why do people think Rockstar Games have the biggest open-world maps when there are larger ones out there? - Quora

Open the full topic