General · EdgepediaOctober 3, 20264 min read

Game Maker's Toolkit

Game Maker's Toolkit (GMTK) is a YouTube video series about video game design, created and presented by the British video game journalist Mark Brown (born 1985). Each episode analyzes a design topic, such as how Half-Life teaches without tutorials or how Resident Evil 4's adaptive difficulty works, and illustrates it with examples from specific games.¹^•²

Key fact	Detail
First episode	"Adaptive Soundtracks in Games", uploaded November 6, 2014¹^•³
Format	Documentary-style educational episodes on YouTube, averaging 15 minutes¹
Creator	Mark Brown, a British games journalist formerly of Pocket Gamer, Wired, Edge, and Eurogamer²
Funding	Crowdfunded through Patreon; by 2018 about one percent of viewership provided his income³
Notable series	Boss Keys (Zelda dungeon design) and Designing for Disability (accessibility)³^•⁴
Game jam	The GMTK Game Jam has run since 2017; around 38,000 people entered in 2025⁴
Own games	Mind Over Magnet (November 13, 2024) and Word Play (2025)⁵^•⁴

Spoilers

Content and series

The channel's episodes examine a single design issue and how specific games implement it. Examples cited across coverage include how Half-Life teaches without tutorials, the hidden difficulty system of Resident Evil 4, the feel of Kratos' axe, and the freedom of the original The Legend of Zelda.¹^•³^•⁷ Production can be extensive: Brown said that for an episode on the Souls-like genre he recorded footage from about 70 different games.³

Recurring series. A look into The Legend of Zelda grew into Boss Keys, a side project covering virtually every title in the series with an intricate mapping system describing each dungeon's layout.³ A later series, Designing for Disability, covers accessibility in game design.⁴ On his Patreon page, Brown also lists episodes on the Nemesis System, teaching complex games, how Sims make decisions, video game economies, and game-by-game breakdowns of the interconnected level design of Zelda and Metroid games.⁸

Origin

Brown worked in traditional games journalism, writing for websites and magazines including Pocket Gamer and Wired. By the early 2010s he saw that fewer people were reading game-related content and more were watching it on YouTube, so he decided to try video. He did not want to imitate the reaction-style content he saw, but after finding film video essays, specifically the channel Every Frame a Painting, he realized he could combine his interest in game design, his journalism background, and that style of video-making.²

His interest in design itself began with Valve's 2007 releases, including Portal and Half-Life 2: Episode 2, whose developer commentary modes explained how psychology, architecture, and composition were used to lead and train the player.² In a ten-year retrospective video, Brown said he started the channel without expertise in game design and aimed to learn through research and share what he found with viewers.⁶

Business model and growth

Brown left his position at Pocket Gamer in January 2017 to work on the channel full time.⁴ Unlike large streamers, his income comes mainly from Patreon, where about one percent of his viewership supports him; by July 2018 the channel had more than 90 videos and 450,000 subscribers.³ He reached one million subscribers in November 2020.⁵

GMTK Game Jam

Since 2017 Brown has run the GMTK Game Jam, an annual game-making event tied to the channel. Around 38,000 people entered in 2025, making it one of the largest game jams in the world.⁴ The 2020 jam continued during the pandemic, with participants joining from across the world.²

Move into game development

In 2021, after reaching a million subscribers, Brown began work on his own puzzle platformer, Mind Over Magnet, documenting the process in his "Developing" series.⁵ The game was released on Steam for Windows on November 13, 2024.⁵ A second game, Word Play, a roguelike Scrabble game, followed in 2025.⁴ He has also made smaller interactive pieces such as Platformer Toolkit, described as a video essay you can play.⁹

Influence

A 2026 Game Developer feature on video-essay criticism named Brown repeatedly among the creators developers cited, describing his award-winning output as ranging from puzzle design to open-world navigation and, through Mind Over Magnet, the development process itself. The creators of The Case of the Golden Idol told Brown they were directly inspired by one of his videos on detective games, though most developers described such influence as indirect and holistic.¹⁰ His channel has also been used to explain technical subjects to a general audience; a 2026 GamesRadar piece on a developer's rewrite of the GTA 3 source code drew on Brown's demonstration of how the game streams Liberty City's assets into the PlayStation 2's 32 MB of memory in small sectors.¹¹

References

Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › Unscripted, reality, and web-native series › Web-native and streaming-original series › Early English-language web series (1997–mid 2010s)

Initially written Oct 3, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026

Notice something wrong?