Physion is a free, portable 2D physics simulation software that allows users to create and test physics-based experiments in an intuitive, game like manner. Whether you’re a student learning physics, a teacher demonstrating concepts, or just someone who enjoys experimenting with realistic simulations, it provides a fun and interactive way to explore the laws of physics.
It achieves this by letting users easily create physics experiments through interactive scenarios. These simulations visually demonstrate real world physics principles, helping users understand how forces, motion, and interactions work.
Physion Portable Physics Simulator

Key Features of Physion
- Realistic 2D Physics Engine: Simulates gravity, friction, collisions, and other physical interactions.
- Interactive Object Creation: Users can draw and manipulate objects such as circles, rectangles, gears, and more.
- Scriptable Simulations: Supports JavaScript for creating custom simulations and automating experiments.
- Intuitive Drag and Drop Interface: No complex programming required, just create and test instantly.
- Multiple Joint Types: Includes hinges, springs, pulleys, and more for building complex mechanical structures.
- Educational Tool: Ideal for students and teachers to explore physics concepts visually.
- Standalone and Portable: No installation required. Can be stored and run directly from a USB drive.
- Customizable Environment: Modify simulation properties like gravity, air resistance, and friction.
- Save and Load Simulations: Create, save, and reload custom experiments anytime.
- Multi Platform Availability: Originally a Windows application, now also available as a web application.
- Open Source & Free: Developed as freeware, making it accessible to all users.
Physion Physics Simulator Specs
- Author’s Website: The original portable version is no longer maintained, but a web based version is available.
- Developer: Originally created by Dimitris Xanthopoulos.
- Extracted Size: 37.7 MB
- License: Freeware
- Supported OS: Windows
- Rating: 4 Star
- Downloading: Get this free portable physics sim software here:
Physion Download
Final Thoughts
Physion is an excellent tool for students, educators, and hobbyists who enjoy experimenting with physics based simulations. The ability to easily create interactive physics scenarios makes it both an educational resource and an enjoyable sandbox for creativity.
Its scripting capabilities provide an added layer of depth for advanced users who want to develop more complex simulations. While the standalone portable version is no longer actively maintained, the website based version ensures that users can still access its powerful features. Overall, it makes for a great physics simulator software that is lightweight, easy to use, and perfect for learning and experimentation.