The architecture must match your device's CPU.
Math-Club-Number-Puzzle-Games_0.12.0_apkcube.apk.Math-Club-Number-Puzzle-Games_0.12.0_apkcube.apk into the emulator window.Before you install: Android will ask you to allow installs from unknown sources, Play Protect may show a warning even on clean files, and sideloaded apps won't update automatically. XAPK and APKS bundles also need a dedicated installer app. Sideloading guide →