Since the game was removed from the Google Play Store in some regions and has seen limited updates, following these steps is the most reliable method:
: If it does not appear (due to being delisted in your region), you will need to download a The Blockheads APK file from a trusted third-party site like APKMirror and drag-and-drop it into the emulator window to install.
: Install a reputable Android emulator like BlueStacks, LDPlayer, or NoxPlayer.