Age of Empires Online, like its predecessors, is a real-time–based strategy video game. The game features much of the gameplay of the series, with the addition of a massive multiplayer online game element. The player possesses a capital city for each started civilization that continues to exist when the player is offline. The game also features a great quantity of new content, such as the ability to craft items with earned materials and trade with other players. Although the official servers were shut down, the game has since been revived through the community-driven project projectceleste.com, which restored online functionality and continues to expand the game with new updates.