What is the name of the world that the MMO "RuneScape" takes place in?

The name of the world that the MMO RuneScape takes place in is Gielinor. Gielinor is a vast and diverse fantasy realm, consisting of various regions, cities, and landscapes for players to explore. It is a complex and immersive world filled with quests, challenges, and adventures, where players can engage in various activities such as combat, exploration, and skilling. Gielinor is known for its rich lore, intricate storytelling, and vibrant community, making it a beloved and iconic setting within the gaming community.