Where can I play Arkham?

Excuse me, I've been hearing a lot about the game "Arkham" lately, and I'm quite intrigued. Could you please enlighten me on where I can play this game? Is it available on popular gaming platforms like Steam or Epic Games? Or perhaps it's a mobile game that I can download from the App Store or Google Play? Additionally, is there a specific website or platform where I can access the game? I'd appreciate any information you can provide to help me get started with playing "Arkham." Thank you in advance for your assistance.