Castles of Velsar

Castles of Velsar is a living medieval MMORPG from Dextrata Software Inc., designed for players to explore, fight, build, and manage a kingdom alongside an AI agent. Its world features four kingdoms, a changing day-and-night cycle, and an economy in which prices respond to supply and demand. Players can establish wilderness camps, develop them into settlements, manage treasuries and storage, and defend their towns in sieges that leave lasting marks on the world. Combat and other systems are shaped by the time of day, while marketplaces offer opportunities to trade goods between kingdoms.

The game can be played in a browser or through available Windows, macOS, Android, and iOS clients. Its optional agent integration uses the Model Context Protocol, allowing connected agents such as Claude to access settlement information and assist with tasks including treasury deposits, storage management, and member administration. Players remain in control of exploration, combat, and kingdom decisions; the agent supports settlement management rather than playing the game for them.