Doctor Who: Defeat Deffry

About

Play as a student at Deffry Vale High School in this Doctor Who puzzle game. Solve logic and sequence challenges to help the headmaster crack an alien code. Simple point-and-click gameplay mixes schoolyard setting with sci-fi mystery. Short and cerebral, this 2006 Flash game brings a light but clever challenge. Its connection to the School Reunion episode adds a nice touch for series fans. Runs directly in your browser with no downloads, making it easy to take a quick mental break.