Game Maker's Toolkit (GMTK) is a video game analysis series created and presented by Mark Brown, a British video game journalist. The show examines and explains various aspects of video game design and is supposed to help viewers consider the design of games that they play and to encourage developers to improve their craft. There are also more focused stems of the series, discussing issues of accessibility in video games or level design. The first GMTK video was published in 2014. The series is hosted on a YouTube channel of the same name and it is funded by viewers via Patreon.