Principia is an open-source (BSD-3-Clause) Android game by Bithack. The APK we host is 29 MB, it needs Android 5.0 or newer, and it declares 2 permissions.
The file on this page is Principia 2026.10.22, 28.75 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.bithack.principia entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the game does.
The manifest inside the APK declares 2 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is BSD-3-Clause. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 2026.10.22
- Size
- 28.75 MB
- Requires Android
- API 21
- Package
- com.bithack.principia
- Signature checked on
- Oct 28, 2026
- Where this file came from
- F-Droid
- Licence
- BSD-3-Clause
- Source code
- Source for this version
File SHA-256: 2c639b6b9009303d646cfe4927d312ba85d3fe16a0779430b2b390c1557a54fd
Signing certificate (SHA-256): 8bac81fa59cbaff8ab413dd7a28df51f90ea7f95a47557907687312ed1424f6c
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- INTERNET
- VIBRATE
More about this app
Our sister site 2113 Apps has a hand-written guide to Principia, with a breakdown of what its APK contains. Read about Principia on 2113 Apps
Screenshots
