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Android installation guide
Your APK download has started
Android asks for one temporary permission because this early-access build comes directly from Deep Play Studio instead of Google Play.
Only install the file named Ludo3D-0.2.0-alpha.2-dev.apk downloaded from this website.
Four screens to look for
Button names may look slightly different on Samsung, Pixel, Xiaomi and other Android phones, but the permission flow is the same.

Exact steps
Swipe down and tap the completed download, or open Files → Downloads and tap Ludo3D-0.2.0-alpha.2-dev.apk.
If Android says your browser or Files app cannot install unknown apps, tap Settings. This is normal for apps downloaded outside Google Play.
Turn on Allow from this source for the browser or Files app that opened the APK, then use the back arrow to return.
Tap Install. Keep Play Protect enabled and allow it to scan the application if prompted.
When installation finishes, tap Open. You can turn “Allow from this source” off again afterward for extra security.
Check before installing
16841e37d0202c0669d43520203ed94bd0a124f01fdab97af9db842418fa32f7Wait for the download notification to say complete, then tap it again.
Open the APK again from Files → Downloads. Android will return you to the correct permission prompt.
Use the “Download again” button at the top of this page.
A Deep Play Original