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Wait for the download notification to say complete, then tap it again.
Android installation guide
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Android asks for one temporary permission because this early-access build comes directly from Deep Play Studio instead of Google Play.
On iPhone or iPad, install Ludo 3D: Board Game from the App Store instead of this APK. Back to Ludo 3D.
Only install the file named Ludo3D-1.2.0-build9-dev.apk downloaded from this website.
Existing testers: build 9 uses a new testing certificate and cannot update the older app. Uninstalling the old app removes its local profile and saved matches. Keep the older version if you need those saves.
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-1.2.0-build9-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
1ad1d65cc16b74bcfe196a803de86c44de7f6d5c36346f1f88f722e26256b6edWait 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