Memory Mayhem! was an online quiz game published on the BBC's The Sarah Jane Adventures website. It was released during the second season of the series. It included specially shot scenes with Daniel Anthony as Clyde Langer.
Clyde Langer is trapped inside a strange hospital and has lost his memories. He can't escape. Clyde needs to find out what is going on and restore his memories which leads to his freedom. It turns out that the Trickster was responsible for the loss of Clydes memories.
How to play? Edit
The game was a quiz game. After each episode of the second series of The Sarah Jane Adventures ten new questions were posted. There was a time limit during which the questions had to be answered. After answering everything right a secret code shown, which could be used to get extras like wallpapers.