I have a game developed by Buildbox2. As BB states their latest version has 64 bit support.
https://www.buildbox.com/forum/index.php?threads/buildbox-2-3-8-2509-beta.17155/
I downloaded latest BB2 and export my game to Android.
Then I Analyze APK
As you see in the picture:
There are two .so files in lib folder. I am wondering "Does my app support 64 bit for Google Play?"
What do you think?
How can I make it 64 bit compliant?
When you find out '.so' files in the arm64-v8a or x86_64 folder, It does mean that this app supports 64 bit. You also could find your own answer by reading the official doc of Google.