Red Blob Games
@redblobgames.com
Hi! I'm Amit Patel. I explain algorithms and math with interactive web pages (incl. pathfinding, hexagons, procgen maps, voronoi). Wrote Solar Realms Elite; helped w/Barren Realms Elite and Realm of the Mad God. https://www.redblobgames.com/
I made a bookmarklet out of it so that I can use it on any page. I bookmarked:
javascript:(async function(){const {attachEditorToElement} = await import ("https://www.redblobgames.com/mjs/scrubbable-codemirror.js");for (let el of document.querySelectorAll("svg")) attachEditorToElement(el)})()
javascript:(async function(){const {attachEditorToElement} = await import ("https://www.redblobgames.com/mjs/scrubbable-codemirror.js");for (let el of document.querySelectorAll("svg")) attachEditorToElement(el)})()
January 9, 2026 at 10:47 PM
I made a bookmarklet out of it so that I can use it on any page. I bookmarked:
javascript:(async function(){const {attachEditorToElement} = await import ("https://www.redblobgames.com/mjs/scrubbable-codemirror.js");for (let el of document.querySelectorAll("svg")) attachEditorToElement(el)})()
javascript:(async function(){const {attachEditorToElement} = await import ("https://www.redblobgames.com/mjs/scrubbable-codemirror.js");for (let el of document.querySelectorAll("svg")) attachEditorToElement(el)})()
I've wanted to do the same, and bookmarked nelsonslog.wordpress.com/2023/12/18/m... which points to code from @b0rk.jvns.ca and @tinysubversions.bsky.social
My own archive of tweets
I put my own Twitter archive online, hosted here with individual tweet URLs like here. The “server” is all static HTML but the list of tweets is an infinite scroll thing. Oct 2006 to No…
nelsonslog.wordpress.com
January 9, 2026 at 4:37 PM
I've wanted to do the same, and bookmarked nelsonslog.wordpress.com/2023/12/18/m... which points to code from @b0rk.jvns.ca and @tinysubversions.bsky.social
Thank you Craig! The funny/surprising thing is that when I sat down to write the blog post I felt like I hadn't done much that year. But going through all my notes made me realized I had done plenty. :)
January 8, 2026 at 5:13 PM
Thank you Craig! The funny/surprising thing is that when I sat down to write the blog post I felt like I hadn't done much that year. But going through all my notes made me realized I had done plenty. :)
Thanks! It was one of those things I wish I had set up years ago :-) and I am looking forward to being able to use it on future projects.
January 6, 2026 at 9:19 PM
Thanks! It was one of those things I wish I had set up years ago :-) and I am looking forward to being able to use it on future projects.
Annual review blog post: www.redblobgames.com/blog/2025-12...
What I did in 2025
www.redblobgames.com
January 6, 2026 at 4:00 PM
Annual review blog post: www.redblobgames.com/blog/2025-12...
Reposted by Red Blob Games
A quick #intro for the lovely people here on Bluesky... nice to meet you!
listen here: pod.link/1810797958 (easy listening)
read here: nonzerosum.games (more posts, pics and sims)
listen here: pod.link/1810797958 (easy listening)
read here: nonzerosum.games (more posts, pics and sims)
July 5, 2025 at 6:54 PM
A quick #intro for the lovely people here on Bluesky... nice to meet you!
listen here: pod.link/1810797958 (easy listening)
read here: nonzerosum.games (more posts, pics and sims)
listen here: pod.link/1810797958 (easy listening)
read here: nonzerosum.games (more posts, pics and sims)
Reposted by Red Blob Games
Heard from a few folks that they procrastinate publishing because they want to make sure it’s good enough and I totally get it, I worry about that too.
But I’ve gotten pretty good at deciding enough is enough and going ahead anyway so here’s a thread with things I don’t like but decided were fine.
But I’ve gotten pretty good at deciding enough is enough and going ahead anyway so here’s a thread with things I don’t like but decided were fine.
December 28, 2025 at 9:14 AM
Heard from a few folks that they procrastinate publishing because they want to make sure it’s good enough and I totally get it, I worry about that too.
But I’ve gotten pretty good at deciding enough is enough and going ahead anyway so here’s a thread with things I don’t like but decided were fine.
But I’ve gotten pretty good at deciding enough is enough and going ahead anyway so here’s a thread with things I don’t like but decided were fine.
Reposted by Red Blob Games
December 22, 2025 at 2:43 PM
Reposted by Red Blob Games
Creative people display contradictory personality traits. This finding has stuck with me since I read it over 20 years ago in psychologist Mihaly Csikszentmihalyi’s book Creativity: Flow and the Psychology of Discovery and Invention.
December 14, 2025 at 2:01 PM
Creative people display contradictory personality traits. This finding has stuck with me since I read it over 20 years ago in psychologist Mihaly Csikszentmihalyi’s book Creativity: Flow and the Psychology of Discovery and Invention.
It's a little bit of a hack but the idea is to replace just the "C" or "F" character at the end of the regexp match with the string "C (113.0°F)" or "F (26.7°C)". That string acts as a single character for text editing purposes.
gist.github.com/redblobgames...
gist.github.com/redblobgames...
December 16, 2025 at 6:46 PM
It's a little bit of a hack but the idea is to replace just the "C" or "F" character at the end of the regexp match with the string "C (113.0°F)" or "F (26.7°C)". That string acts as a single character for text editing purposes.
gist.github.com/redblobgames...
gist.github.com/redblobgames...
I hadn't realized it before but #emacs syntax highlighting (font lock) can do a lot more than assign color. Here I'm parsing the string into a number, doing a calculation, then generating text to show the result
December 16, 2025 at 5:57 PM
I hadn't realized it before but #emacs syntax highlighting (font lock) can do a lot more than assign color. Here I'm parsing the string into a number, doing a calculation, then generating text to show the result
Thank you for this and the other detailed reports! I have learned so much CSS from them.
December 12, 2025 at 9:48 PM
Thank you for this and the other detailed reports! I have learned so much CSS from them.
Nice tool! I had previously been using token-explorer for my experimentation github.com/willkurt/tok...
(blog post: amitp.blogspot.com/2025/10/llms...)
(blog post: amitp.blogspot.com/2025/10/llms...)
GitHub - willkurt/token-explorer: A simple tool that let's you explore different possible paths that an LLM might sample.
A simple tool that let's you explore different possible paths that an LLM might sample. - willkurt/token-explorer
github.com
December 9, 2025 at 10:13 PM
Nice tool! I had previously been using token-explorer for my experimentation github.com/willkurt/tok...
(blog post: amitp.blogspot.com/2025/10/llms...)
(blog post: amitp.blogspot.com/2025/10/llms...)
Reposted by Red Blob Games
this fall I worked with the core Git folks on writing an official data model for Git and it just got merged! I learned a few new things from writing it. github.com/git/git/blob...
git/Documentation/gitdatamodel.adoc at master · git/git
Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGadget (https://gitgitgadget.github.io/). Please follow Documen...
github.com
December 2, 2025 at 5:01 PM
this fall I worked with the core Git folks on writing an official data model for Git and it just got merged! I learned a few new things from writing it. github.com/git/git/blob...
I'm very interested in that card but I live 800 miles away so I hope there will be another opportunity sometime :)
November 20, 2025 at 9:29 PM
I'm very interested in that card but I live 800 miles away so I hope there will be another opportunity sometime :)
In the US we sometimes do something similar to highways. Examples in california:
www.google.com/maps/@37.629... (I-380 west end is a stub left for future expansion)
en.wikipedia.org/wiki/Joe_Col... (I-680, was left for many years, hoping that there would be funding someday to complete them)
www.google.com/maps/@37.629... (I-380 west end is a stub left for future expansion)
en.wikipedia.org/wiki/Joe_Col... (I-680, was left for many years, hoping that there would be funding someday to complete them)
www.google.com
November 20, 2025 at 7:52 PM
In the US we sometimes do something similar to highways. Examples in california:
www.google.com/maps/@37.629... (I-380 west end is a stub left for future expansion)
en.wikipedia.org/wiki/Joe_Col... (I-680, was left for many years, hoping that there would be funding someday to complete them)
www.google.com/maps/@37.629... (I-380 west end is a stub left for future expansion)
en.wikipedia.org/wiki/Joe_Col... (I-680, was left for many years, hoping that there would be funding someday to complete them)
I was looking through my old projects and found this. I love how it looks and want to do more with this www.redblobgames.com/x/1638-voron...
November 18, 2025 at 11:26 PM
I was looking through my old projects and found this. I love how it looks and want to do more with this www.redblobgames.com/x/1638-voron...
Reposted by Red Blob Games
As an example of the sort of stuff on there, one of the articles is a short writeup of a prototype I mentioned on bluesky a year or so back. An approach to generating a top down city map.
www.nullpointer.co.uk/generating-c...
www.nullpointer.co.uk/generating-c...
Generating City Maps
This post explains how I coded a city map generator for a…
www.nullpointer.co.uk
October 13, 2025 at 8:44 AM
As an example of the sort of stuff on there, one of the articles is a short writeup of a prototype I mentioned on bluesky a year or so back. An approach to generating a top down city map.
www.nullpointer.co.uk/generating-c...
www.nullpointer.co.uk/generating-c...
Do the squirrels like you because you collect tabs like they collect acorns ? ;-)
November 15, 2025 at 12:26 AM
Do the squirrels like you because you collect tabs like they collect acorns ? ;-)