Knowledge bases

Game development wikis

• Game Programming Resources Wiki — huge list of Python game development resources.
• The Giant Bomb Wiki contains a vast database of videogame concepts, heavily cross-referenced.
• Python Game Libraries.

Game genre wikis

• VNDev Wiki ^new!
• Interactive fiction wiki
• The BoardGameGeek Wiki
• RogueBasin, “The Roguelike information resource that you can edit.”
• Sensei's Library: all about the game of Go.
• Libre Game wiki: The encyclopedia of free/open source games.
• Procedural Content Generation Wiki Games that use it, how to do it, and more
• Programming Games Wiki, i.e. a wiki about those games that are played by writing programs to compete against each other.

Game programming tutorials

• How to Make Visual Novels ^new!
• The NeHe OpenGL tutorials; example code is C++ for Windows, but is easy to adapt.
• Jerome Jouvie has a series of OpenGL tutorials for Java, and related software.
• Ray-Casting Tutorial For Game Development using HTML5.
• Moosader Tutorials — a video series for beginning programmers and/or game developers; Love2D, Allegro, SDL, C++ and a big FAQ.
• A Love2D Arkanoid Tutorial hosted on GitHub, a little light on the explanations, but thorough and well-structured.
• Red Blob Games: visual explanations of various algorithms used in games, with real-world examples.
• Interactive Fiction Design, Coding in Twine & Other IF Resources

Miscellaneous

• Hyperfiction Software
• Game Development Resources at The Cyber Vanguard
• Game Design Depository, an impressive collection of quotes and links about the eponymous topic.
• Music Theory for Beginners: the start of a very good series that teaches the basics of making music.
• Medieval Names Archive — just what it says on the tin.
• Easy 6502, a mini-ebook teaching the basics of assembly language with a friendly dialect.
• Think Labyrinth! is hands-down the Web’s best resource on the history, philosophy and creation of mazes, including computer algorithms and software.
• Getting Started With HTML5 Game Development, a collection of various useful resources from Mozilla Hacks.
• DIY Digital Games Resource List (Arisia 2015)
• Personal Games Resource List and Mental Health in Games Resource List.
• The official resource list of the js13kGames competition.
• Kenney Vloegels' guide to getting started with game development.
• The Guide to Implementing 2D Platformers
• Procedural Content Generation in Games: an academic work on the titular topic.