Android
Install an EmmaCraft APK
1. Download
Use the official release page so the version and checksum stay tied to the file.
2. Allow this source
If Android asks, allow only your browser or file manager to install unknown apps.
3. Install
Open the APK, review Android’s package installer screen, and tap Install.
4. Revoke if desired
You can turn the unknown-app permission back off after installation.
Safety: do not disable device security globally just to sideload an app.