This report describes the development of an augmented reality game by students of the Delft University of Technology. This game, called the Augmented Reality Mirror Game, is a game that uses augmented reality technology to simulate lasers and objects with optical properties like mirrors and beam splitters. The goal of this game is to use these objects to route one or more laser beams from emitters to targets. Collaboration is an essential aspect of the game. Different players have distinct capabilities to manipulate the game world and solve the puzzles.