Twisted Wizard

Twisted Wizard is one of Greg's video games. He was going to get it one Christmas, but his present was mixed up with a present for the 'Giving Guy', so his mom bought him a new copy of Twisted Wizard. Instead of getting Twisted Wizard, he got a sweater. It is a game using a machine similar to a Sony PlayStation 2, and is described as being "impossible to save" in the online version of the first book. However, in the movie, it is clearly a Nintendo Wii game.

Greg always beats Rowley in Twisted Wizard, with the exception of Dog Days, where Rowley injured Greg and hindered his ability to play, thus beating him and winning the "grand prize" of a large box of chocolate-covered raisins.