Elder Scrolls 4: Knights of the Nine — The gameplay in the expansion is no different from the main game: the same game design techniques, character actions and user interface are used. The game follows an open gameplay model: the main quest can be delayed or ignored by the player while he does other things: explore the game world, complete side quests and develop his character. Unlike previous add-ons for Oblivion, they do not contain mechanics that push the player to new tasks; The player must stumble upon the main mission of the expansion on his own without outside help.