MSPhysics is a real-time physics simulation plugin for SketchUp, similar to SketchyPhysics. Unlike SketchyPhysics, MSPhsyics is written completely from scratch, integrating the latest NewtonDynamics physics SDK. The difference between the two is that MSPhysics is significantly faster, has a more advanced scripting API, and comes with a reliable Replay animation tool, which allows recording simulation and exporting to SkIndigo, KerkyThea, and a sequence of images.

Another difference between MSPhysics and SketchyPhysics is having advantage over user input. In SketchyPhysics there was a struggle in creating keyboard and mouse controlled games. Whenever simulation would run, there had to be an active control panel window that would redirect user input, that is to prevent the interference of SketchUp's keyboard and mouse shortcuts. In MSPhysics, however, the control panel is not necessary. MSPhysics utilizes AMS Library, which on the windows side, allows taking control over user input and switching SketchUp fullscreen. Imagine playing FPS games in SketchUp, in fullscreen, without having various SketchUp commands taking control over simulation. All that is possible with MSPhysics.

At the moment, the project is under development. Various optimizations, improvements, and bug fixes are made to enhance stability. Once MSPhysics gets to a stable level, that is version 1.0.0, the focus will shift toward making tutorials and enriching the Wiki branch.

Huge credit goes to Julio Jerez for writing the NewtonDynamics physics engine. As well as, to those who contributed in making the project a reality.


  • (Menu) Plugins → MSPhysics → [option]
  • (Context Menu) MSPhysics → [Option]
  • MSPhysics Toolbars

Compatibility and Requirements

  • Microsoft Windows XP or later / Mac OS X 10.6+
  • SketchUp 6 or later. SU2016 64bit is recommended!
  • AMS_Library 3.4.0+

Installation Instructions

  1. Navigate to MSPhysics Homepage.
  2. Download ams_Lib_x.y.z.rbz and MSPhysics_x.y.z.rbz.
  3. Open SketchUp.
  4. Select (Menu) Window → Preferences.
  5. Navigate to Extensions section within the System Preferences dialog.
  6. Click Install Extension... button, select ams_Lib_x.y.z.rbz, and click Open.
  7. Repeat the same step for MSPhysics_x.y.z.rbz
  8. Ensure that both AMS Library and MSPhysics extensions are checked.

Uninstallation Instructions

Follow these steps in case you intend to uninstall the plugin.

  1. Navigate to the desired Plugins folder:

    • For Windows
      • For SU8 and below the plugins folder is located in
        • C:\Program Files (x86)\Google\Google SketchUp #</tt>
      • For SU2013 the plugins folder is located in
        • C:\Program Files (x86)\SketchUp\SketchUp 2013</tt>
      • For SU2014 and later the plugins folder is located in
        • C:\Users[User Name]\AppData\Roaming\SketchUp\SketchUp 20##\SketchUp</tt>
        • %appdata%\SketchUp\SketchUp 20##\SketchUp</tt>
        • C:\ProgramData\SketchUp\SketchUp 20##\SketchUp\Plugins
    • For Mac OS X
      • For SU8 and below the plugins folder is located in
        • [YOUR USER NAME]/Library/Application Support/Google SketchUp #/SketchUp/plugins
      • For SU2013 and later the plugins folder is located in
        • > Library > Application Support > SketchUp # > SketchUp > Plugins
  2. Select ams_Lib folder, ams_Lib.rb file, MSPhysics folder, and MSPhysics.rb file and delete them.


  • MSPhysics 0.9.9
  • NewtonDynamics 3.14
  • SDL 2.0.5
  • SDL_Mixer 2.0.1

Release Date

December 22, 2016


MIT © 2014-2016, Anton Synytsia


  • Julio Jerez for the NewtonDynamics physics engine.
  • Chris Phillips for ideas from SketchyPhysics.
  • István Nagy (PituPhysics), Faust07, and many others for testing.


Anton Synytsia