The latest version of Principia APK (v2026.10.22) is available to download. Physics-based sandbox building game This app works on Android phones and tablets.
About Principia APK
Principia is a physics-based sandbox building game. Build and play advanced contraptions, circuiting, minigames, robot adventures and more. The sandbox contains 200+ different objects ranging from basic wooden building blocks to circuitry, electrical and mechanical components, small robots you can control and fight against, and a LuaScript object featuring Lua scripting that can interact with the world. Build a controllable car, a calculator or make your own game with circuitry or in Lua. The Principia community site contains tens of thousands of creative levels made by players like you, from impressive contraptions to amusing games all for you to browse through and play. If something really peaks your interest, open the level in the sandbox to see how it ticks. What will you create in the sandbox? Principia started out as a paid proprietary game developed during 2013-2014 before being abandoned due to financial issues. Now the game is an open source project since 2022 developed by the same community…
Principia APK was developed by the original developer and is available under the BSD-3-Clause open-source license. This means the source code is public and anyone can inspect it. If you like Puzzle Game apps, you can also browse more apps in this category.
Principia APK Information
| App Name | Principia |
| Package | com.bithack.principia |
| Version | 2026.10.22 |
| Size | 29 MB |
| Requires | Android 5.0 and up |
| Category | Puzzle Game |
| Developer | N/A |
| License | BSD-3-Clause |
| Source | F-Droid |
| Last Updated | October 27, 2026 |
Download Principia APK v2026.10.22
How to Install Principia APK on Android
- Download the Principia APK file using the button above.
- Open your phone Settings and allow “Install unknown apps” for your browser or file manager.
- Tap the downloaded APK file and press Install.
- After installation, open Principia from your app drawer.
Why Download Principia APK from Here?
We link Principia APK directly from F-Droid, so the file is original and we make no changes to it. Whenever a new version is released, this page is updated automatically, so you always get the latest Principia APK.
Frequently Asked Questions
Is Principia APK free?
Yes, Principia APK is free and available under the BSD-3-Clause open-source license.
Is Principia APK safe?
This file comes from the official F-Droid repository, where apps are open source and their source code is public. Still, always check an app’s permissions before installing it.
Which Android version does Principia APK need?
Principia APK requires Android 5.0 and up to run.
What is the latest version of Principia APK?
The latest version is 2026.10.22, updated on October 27, 2026.
Official page: Principia official website / source
