Colin & Bradley's Merlin Quest was a weekly series of short episodes accompanying the third series of Merlin, but was not recommissioned for another series. It was produced by Ian Smith with Luke Baker as assistant producer. The episodes had a duration of two to four minutes and were posted to the official website of Merlin.
Colin Morgan and Bradley James, the actors who play the characters of Merlin and Arthur, had to complete various challenges and tasks, which were written on cards they received. The tasks included questions of personal nature and about the show, little acting challenges, a drawing session, a staring competition and a Mastermind-like quiz. Several episodes also contained bloopers of Merlin.