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Phun Algodoo [repack] -

The core algorithm was updated for better stability, more accurate friction models, and superior fluid dynamics.

Intricate clockwork mechanisms, chronographs, and escapements.

It was more than just code; it was a digital playground. Users weren't just observing physics but creating it. The software quickly went viral, especially after a captivating YouTube clip demonstrating its capabilities. Teachers, students, and hobbyists flocked to it . However, its popularity also brought the need for professional support. The open-source model couldn't sustain the server costs and development resources necessary to maintain such a rapidly growing project.

Unlike CAD software where you input numbers, Algodoo is about drawing . If you can draw a circle, you can make a wheel. If you can draw a line, you can make a ramp. phun algodoo

Whether you knew it as Phun or know it now as Algodoo, this software represents a masterful intersection of simulation technology and education. It transforms abstract physical principles into tangible, visual, and interactive experiences. By enabling users to design, test, and innovate, Phun Algodoo continues to be an essential tool for aspiring physicists, engineers, and creators.

For over a decade, the landscape of interactive education has been quietly shaped by a remarkable piece of software: a two-dimensional physics sandbox that turned abstract Newtonian laws into a playful, vibrant canvas. Born from a Swedish master's thesis and bursting into global fame via a viral YouTube video, the journey from to its professional successor Algodoo is a fascinating story about the power of “learning while playing” .

After a long hiatus, Algoryx resumed updates, releasing version 2.2.0 in late 2024 and continuing with bug fixes into 2025. Key Features and Tools The core algorithm was updated for better stability,

Algodoo is a "sandbox," meaning there are no predefined goals—you are free to create, tinker, and experiment. 1. 2D Physics Simulation

While often mentioned together, Phun and Algodoo have distinct characteristics:

It is in education that Algodoo truly shines. Its playful, cartoonish aesthetic belies its rigorous physics engine, making it an ideal tool for engaging students from elementary school to university level. Users weren't just observing physics but creating it

From Phun to Algodoo: Exploring the Ultimate 2D Physics Sandbox

Algodoo’s most lasting legacy is arguably in education. It has been widely adopted as an effective STEM teaching tool from middle school to university levels . The open-ended nature allows students to move beyond rote memorization.



06 Nov, 2012
v 2.2.1 en (crypto) - English language, download for mobile phones:jad, jar.
for BlackBerry: jad, jar, cod, cod-1
for Android phones apk. You need install before App Runner

v 2.2.1 ru (crypto) - Russian language (русский язык), for mobile phones:jad, jar
v 2.2.1 ar (crypto) - Arabic language (اللغة العربية), for mobile phones:jad, jar
v 2.2.1 fa (crypto) - Persian(Farsi) language (زبان فارسی), for mobile phones:jad, jar or Finglish jad, jar
v 2.2.1 id (crypto) - Indonesian language (bahasa Indonesia), for mobile phones:jad, jar
* Added features:
  • Extended list of available servers
  • Mechanism of testing and replacing available/filtered servers (specialy for iranian users)
  • Removed two-forked information sending/receiving via socket (decrease DC in some cases)

    * Fixed bugs:
  • File sending over http (happened with 2nd http server)
  • Main chat offset up for populated rooms

    05 Nov, 2011
    v 2.2.0 en (crypto) - English language, download for mobile phones:jad, jar.
    for BlackBerry: jad, jar, cod, cod-1
    for Android phones apk. You need install before App Runner

    v 2.2.0 ru (crypto) - Russian language (русский язык), for mobile phones:jad, jar
    v 2.2.0 ar (crypto) - Arabic language (اللغة العربية), for mobile phones:jad, jar
    v 2.2.0 fa (crypto) - Persian(Farsi) language (زبان فارسی), for mobile phones:jad, jar or Finglish jad, jar
    v 2.2.0 id (crypto) - Indonesian language (bahasa Indonesia), for mobile phones:jad, jar
    * Added features:
  • Full 128 bit data ciphering - any hacker, internet provider or government cannot catch and read your sending/receiving encripted messages or files
  • Smile choicer whith text entering
  • Vibration for private messages
  • Location detection for phones with GPS supporting (need in server improving)
  • Error alert showing when server has maintances
  • Screen rotation for phones with gravitation detector
  • Drag by touchscreen for all screen forms
  • Drag by touchscreen pointer items in lists (up and down)
  • Drag by touchscreen pointer items in chat (up and down)
  • Phone contacts records reader for next SMS sending
  • Arabic writing for main menu
  • Images for file reader
  • Increased a bit sensitivity of touchscreen for buttons
  • Cursor position freezing till select message in chat
  • Room message sending from any window by using #key or touchscreen in buttom place of chat

    * Fixed bugs:
  • Enter(Ok)/Touchscreen not permit to navigate via catalogs in filesystem
  • Main menu hold navigation by touchscreen
  • For large icons not show correct list with 1 record in it
  • Cannot show popup menu for last record in main chat by touchscreen
  • A lot other minor bugs fixed

    v 2.1.0 - 26 Mar, 2010, download for mobile phones:jad, jar
    for BlackBerry: jad, cod, cod-1
    for Android phones apk (need in j2me runner, switch ON turbo if you dont see menu details, set HTTP connection in settings)

    v 2.1.0 ru - russian language (русский язык), for mobile phones:jad, jar, for BlackBerry: jad, cod, cod-1
    * Added features:
  • Gradient for buttons, selected items and menus
  • Rounding of corners
  • Shading of forms
  • Switching between forms by using 7 and 9 keys
  • Audio/Video player
  • Audio/Video recorder
  • Left and Right fast acces menus (L,R). Open by using 1 and 3 keys
  • Hold key detection for fast navigation
  • Supporting of Back key for Nokia and SonyEricsson phones
  • Loading pictures by URL

    * Fixed bugs:
  • Corrected some colors in color palettes
  • Keys assignment for BlackBerry phones
  • Traffic overexpenditure in some rare cases

    v 2.0.0 - 01 Feb, 2010, download jad, jar
    * Added features:
  • Animation in up menu and for all image
  • Resistive touch screen (touchpad) supporting
  • More 30 new avatarts
  • Added large smiles
  • Backgrounds for rooms and private messages /need in server upgrade
  • More 20 colors for messages
  • Socket/http autodetection when chat application start first time
  • New fast engine for Symbian OS v9.X
  • Arabic rotation - correct order of arabic words for Nokia phones
  • Arabic style for all windows
  • Arabic chat order of avatars, nicks, messages (right to left)
  • Downloading graphics and music from server and caching in RMS for traffic reducing
  • High speed cache for frequent used images
  • Resizing rows in menu and chat for different size of images

    * Fixed bugs:
  • Correct showing main menu after get connection error
  • "capture://image" error in process snapshot under camera of Nokia 5200, 5300,... (S40 3rd edtion)
  • Some texts or smiles out of range of private window

    v 1.9.2 - 05 Sep, 2009, download jad, jar
    * Added features:
  • Hint message about ability to change socket to http if get connection error

    * Fixed bugs:
  • News line duplication
  • News line overlapping users online in right top corner
  • Removed help message about settings for mobile operators of Gergian country

    v 1.9.1 - 29 Aug, 2009, download jad, jar
    * Added features:
  • Turbo mode (decreased animation, increased speed of screen refreshing for phones with Symbian 9.0+)
  • Socket connection (more fast data exchange with servers)
  • Server push (for socket connection only)
  • Removed progress bar for socket connection
  • Animated smiles in news line
  • Arabic newsline (autodetect direction and ">", "<" simbols in beginning for select direction) /need in server upgrade
  • Users avatars in news line
  • Ability to change color of users nick in chat /need in server upgrade
  • List of servers loaded by server push
  • Increased file uploading and downloading up to 8MB /need in server upgrade

    * Fixed bugs:
  • Memory failure on some Nokia phones (added picture caching)
  • Delay in case some http errors

    v 1.0.5 - 20 Jan, 2007, download jad, jar