Just as a heads up for anyone with an older phone who is interested in trying the game, you can run it via BlueStacks on PC.
I'm not going to give a complete tutorial here, but enable hardware virtualization, download the latest version of BlueStacks, create a new Nougat 64-bit instance (4 Cores / 8GB / High Performance / Performance Mode / DirectX). Open the Google Play app, sign in, search for and download the game. It'll even create a desktop icon.
Not sure what the minimum requirements will be to get decent performance, but you can try Balanced Performance / Compatibility Mode or lower the display resolution in the settings if it's not running well. The closed beta had some crashing issues, usually after playing for a while or going through lots of menus, which points to possible memory leaks which may or may not be resolved in the launch version. FWIW just based on launching the game it's already running better. In the CBT it would sometimes crash on startup or take a very long time to load.
If you played the CBT, your old BlueStacks instance might not be compatible with the game. I had to download the latest version and create a new instance to get it to show up in the Play Store as a compatible game.