In his latest design feature, Activision and former Insomniac designer Mike Stout breaks down the boss battle into eight different beats, and runs two notable ones -- The Legend of Zelda: Ocarina of Time's Ganon and Portal's GladOS -- through a thorough analysis to illuminate their designs.

Former Insomniac designer Mike Stout takes shares a useful rubric for judging the depth of play mechanics, including checks for redundant ones, in this in-depth design article, which contains examples from the Ratchet & Clank series.