Android
The game is available on the Google Play Store.
You can sign-in on the Android version using a Google account.
iOS
The game is available on the Apple App Store.
You can sign-in on the iOS version using an Apple account.
MacOS
The game is available on MacOS via the App Store.
You can sign-in on the MacOS version using an Apple Account.
Keep in mind that the game is optimized for a mobile, portrait mode experience.
PC
The game is available on PC using any emulator (BlueStacks...) or Google Play Games on PC.
Switching devices?
Moving to a new phone, or going between Android and iPhone? Apple sign-in only works on Apple devices, while Google works everywhere, so crossing between Android and iPhone needs a Google connection. See the "Moving to a new phone" article for the step-by-step.