Bartosz Ciechanowski publishes interactive articles about science and engineering, including a feature on the Moon.
Red Blob Games
Red Blob Games publishes interactive tutorials and visual explanations of mathematics and algorithms.
About Red Blob Games
Red Blob Games publishes interactive visual explanations of mathematics and algorithms, mostly drawn from computer game development. Its main content is a set of tutorials and articles on topics such as A* and other pathfinding methods, hexagonal grids, noise-based map generation, Delaunay and Voronoi structures, graph theory, line drawing, and probability for RPG damage. The author states that the articles are free, with no signup and no ads. The main audience is independent, student, and hobbyist software developers.
The site also has a Play section of demos, such as the Mapgen4 map generator, and a Ponder section of exploratory ideas, some without full guides. A Meta section covers how to build interactive tutorials, and the author describes it as an ongoing series.
Key features
- Interactive visual explanations of A* pathfinding and related algorithms
- Hexagonal grid reference and implementation guide
- Map generation from noise functions and polygonal map generation
- Guide to Delaunator, a Delaunay and Voronoi library
- Probability for RPG damage with distributions explained visually
- Mapgen4 demo that lets users draw their own terrain
Best for: Independent, student, and hobbyist software developers who want visual explanations of pathfinding, grids, and map generation for games.
Good for
- Articles are stated to be free, with no signup and no ads
- Examples are drawn from computer games and the author's own projects
Watch out for
- Some ideas in the Ponder section are explored without a full guide
- The Meta series on building interactive tutorials is described as ongoing
Red Blob Games at a glance
- Website
- redblobgames.com
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Red Blob Games FAQ
Is there a cost to read the articles?
The author states that all articles are available for free, with no signup and no ads.
Who is the site written for?
The main audience is described as independent, student, and hobbyist software developers.
Can visitors create their own terrain with the demos?
The Mapgen4 map generator is described as letting users draw their own terrain.
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Tell us and an editor will check it.
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