Squirrel Eiserloh (@SquirrelTweets) profile picture

Squirrel Eiserloh

@SquirrelTweets

Games. Design. Code. Learning.

 Dallas, TX, USA
eiserloh.net/bio/
Joined May 2009
  • Tweets5.7K
  • Following309
  • Followers1.3K
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Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)Photo by Squirrel Eiserloh (@SquirrelTweets)
Fun with applying easing functions on polar Ɵ. (Ignore the polar graph changes beneath, that was from previous video on easing R instead of Ɵ.)
Squirrel Eiserloh (@SquirrelTweets) profile pictureSquirrel Eiserloh
@SquirrelTweets18 May 2023
Replying to @SquirrelTweets @seanmcdonaldxyz @Code4_11
It's also interesting that the points aren't "moving" per se but "phase-shifting in Ɵ". You can see what I mean if you follow any given dot/cluster and see that it always comes back to the same place. You can see it better with fewer bigger points, color-coded:
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Nas (@NasNakarus) profile picture
Nas
@NasNakarusOct 27
Our needle in a haystack game has been cloned so many times we made a new game mode find the original game
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Babylon 5 News (@B5News) profile picture
Babylon 5 News@B5NewsOct 26
RIP to the great Walter Koenig, who brilliantly played Psi Cop Bester on all five seasons of Babylon 5. A frightening performance by a wonderful man.
Image from Babylon 5 News (@B5News)
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Daniel - Storyteller (@danielben) profile picture
Daniel - Storyteller@danielbenOct 22
Storyteller is getting a HUGE update for Steam on November 17 We spent two years working adding pirates, frankenstein, hansel & gretel, a genie and a dragon. But we also did something reckless: we revised the whole game, start to finish. store.steampowered.com/news/…
Image from Daniel - Storyteller (@danielben)
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Erin Catto (@erin_catto) profile picture
Erin Catto@erin_cattoOct 19
Box2D v3.2 released! New features include large world support, recording and replay, snapshots, and a dynamic character mover. Performance improvement of 3x across many benchmarks versus v3.1. Blog: box2d.org/posts/2026/10/box2…

Box2D 3.2

Version 3.1 was released about 16 months ago. I’ve been busy with Box3D and work, but I’ve managed to add a lot of cool stuff to Box2D. Also it has been heavily optimized and tested. Here I’ll cover...

box2d.org
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John Romero 🤘🏽 (@romero) profile picture
John Romero 🤘🏽
@romeroOct 13
Devastating news today. Richard “Levelord” Gray was such a great guy. Like many of our friends, I wish I could have hung out with him again. He was full of life, a gentle soul, and an excellent level designer. He was called “Levelord” for a reason. I loved the first episode of DN3D but was more drawn in by E2 and E3 that had such distinctive designs. We’re gonna miss you, man. You were one of the best.
Image from John Romero 🤘🏽 (@romero)
Image from John Romero 🤘🏽 (@romero)
Image from John Romero 🤘🏽 (@romero)
Image from John Romero 🤘🏽 (@romero)
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Tom Mustaine (@tmustaine) profile picture
Tom Mustaine@tmustaineOct 14
Replying to @TheLevelord
@TheLevelord You're supposed to be here. Lost one of the greatest people I've ever known today. Richard made a huge personal impact on the careers of thousands while crafting experiences that tens of millions explored. 1/3
Image from Tom Mustaine (@tmustaine)
Image from Tom Mustaine (@tmustaine)
Image from Tom Mustaine (@tmustaine)
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SMU Guildhall (@smuguildhall) profile picture
SMU Guildhall@smuguildhallSep 28
This Friday at @SMU, join us for a presentation by Chris Schmidt of @InfinityWard, game director for Call of Duty: MW4, on how to make games fun and wisdom from 20+ years in games. Go behind the scenes of what it's like to make games. Open to all. cglink.me/2vb/r397456
Image from SMU Guildhall (@smuguildhall)
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SMU Guildhall (@smuguildhall) profile picture
SMU Guildhall@smuguildhallSep 16
All are invited to join us for a special Game Changers Speaker Series event at @SMU featuring Chris Schmidt (SMU Guildhall alumnus, Cohort 10), Game Director of Call of Duty: Modern Warfare 4 at @InfinityWard. RSVP here: smu360.smu.edu/gsmu/rsvp_boo… #gamedev
Image from SMU Guildhall (@smuguildhall)
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whut
The White House (@WhiteHouse) profile pictureThe White House
@WhiteHouseSep 7
This Labor Day, we celebrate the workers and products that are proudly MADE IN AMERICA. 🇺🇸
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Joe Kreiner (@joekreiner) profile picture
Joe Kreiner
@joekreinerSep 3
Half the Microsoft legal team just spat out their 5pm cocktail.
The White House (@WhiteHouse) profile pictureThe White House
@WhiteHouseSep 3
ARCADE.GOV 👾
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My pico8 metroidvania is now out on Nintendo Switch! * 64x64 resolution * classic formula distilled to its core * every pixel placed with intention It is called Ascent DX, tell me what you think!
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John Carmack (@ID_AA_Carmack) profile picture
John Carmack
@ID_AA_CarmackAug 9
I highly recommend @fabynou ‘s Game Engine Black Books for anyone even vaguely interested in 90’s game technology!
Fabien Sanglard (@fabynou) profile pictureFabien Sanglard@fabynouAug 6
Quakecon 2026 is awesome!
Image from Fabien Sanglard (@fabynou)
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Love it
id Software (@idSoftware) profile pictureid Software
@idSoftwareAug 8
a walk through memory lane with the studio founders, celebrating 35 years of id Software: @ThatTomHall, @romero, @ID_AA_Carmack
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Here is a discussion with @erin_catto! We talk about his foundational open source Box2D (Box3D was not yet announced!!) - what makes for a great physics engine, how API should look like, and stacking boxes! Later we talk about Legends of California - an upcoming game which uses Box3D and has advanced physically simulated mechanics in store! Erin thank you so much! youtu.be/DQNqo2xtq6U
On Box2D & Legends of California | Erin Catto

On Box2D & Legends of California | Erin Catto

Read the paper on Iterative Dynamics with Temporal Coherence here: ...

youtube.com
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Tom Mustaine (@tmustaine) profile pictureTom Mustaine@tmustaineJul 4
Playing around on my new C64 Ultimate yesterday and got re-obsessed with an old idea. I REALLY want a pocket C64. It can't just be a screen + a joystick. It needs a full PETSCII keyboard, so pocket programming is possible. So I whipped up something crazy. #c64 #RetroGaming #8bit
An unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image shows multiple device color options from classic C64 beige to modern black and white treatments.

ALT An unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image shows multiple device color options from classic C64 beige to modern black and white treatments.

A technical mockup of an unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image shows the core device idea with front, side, bottom, and top profiles. Measurements, features, and LED details.

ALT A technical mockup of an unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image shows the core device idea with front, side, bottom, and top profiles. Measurements, features, and LED details.

A detailed view of the PETSCII keyboard as part of unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image discusses the genesis of this idea starting back on the Palm TreoWX and illustrates the design process from the C64 keyboard to Excel, to a thumb-board style design.

ALT A detailed view of the PETSCII keyboard as part of unsolicited idea for Team Commodore of an 80mm wide, 116mm tall pocket Commodore 64 with a full PETSCII keyboard and joystick. Customizable front and side buttons, a backlit keyboard, a 320x200 full color screen, Wi-Fi + Bluetooth, a headphone jack, and a Micro SD card slot! Heck, it could even be a phone! The new Commodore company HAS to be thinking about it! This image discusses the genesis of this idea starting back on the Palm TreoWX and illustrates the design process from the C64 keyboard to Excel, to a thumb-board style design.

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Wojtek Sterna (@wojtsterna) profile picture
Wojtek Sterna
@wojtsternaJul 2
Now that Box3D is out can't wait for a new wave of "vibe coded physics demos" demonstrating how you can easily "create" a 3D physics engine with "AI" :)
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Erin Catto (@erin_catto) profile picture
Erin Catto@erin_cattoJul 1
I’m happy to announce the release of a new open source 3D physics engine called Box3D. I’ve been working on this project for a few years now, but it represents over 20 years of experience writing physics engines for games. Read more here: box2d.org/posts/2026/06/anno…

Announcing Box3D

I’m happy to announce the release of Box3D, an open source 3D physics engine. It is now available on GitHub. Box3D repository You can think of Box3D as a fork of Box2D, extended with many features...

box2d.org
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Finally, an important milestone
Image from Squirrel Eiserloh (@SquirrelTweets)
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🙊Christer Ericson (@ChristerEricson) profile picture🙊Christer Ericson@ChristerEricsonJun 26
How to shine brightly in the games industry: stepping up to help Dear ImGui as a dedicated maintainer of one or more platform/renderer backends…
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Erin Catto (@erin_catto) profile picture
Erin Catto@erin_cattoJun 8
New recording and replay feature added to Box2D. Uses determinism to exactly reproduce the simulation from your game. Debug your game with all details including ray casts and other queries. Deterministic rollback too. box2d.org/posts/2026/06/repl…

Replay

Replay is a new system I developed for Box2D. The main goal is to allow users to send me files I can use to reproduce bugs. Because Box2D is open source, I can rarely run a user’s game or see their...

box2d.org
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