Spiral Knights is a massively multiplayer online role-playing game created by Three Rings Design and published by Sega. The free-to-play, Java-based game was released in 2011,[2] and continues to be updated.[3]
In the game, the player controls a knight of the Spiral order, which has crash-landed on the mysterious planet Cradle[4] Knights cooperatively battle monsters throughout the Clockworks, the dungeon that fills the planet's interior. They also battle each other in an optional player-versus-player mode.
Spiral Knights reached one million accounts in its first three months[5] and three million accounts in its first thirteen months.[6] The game won Best Online Game Design, and was nominated for three other awards, in the 2011 Game Developers Choice Online Awards.[7]