Players can simply download the Windows or MacOs version of the game from the website and run it on their system.
For Mac users, install the game by dragging the game logo to the folder.
Once you have done that, click 'Open' to start the game.
For Window users:
If you receive this message while launching any file or application, you may ignore it and proceed to open it directly.
Go to the More info on the prompt: 
Then click on Run anyway button.
Follow the subsequent instructions to install the game on your system.
Once installed, simply open the app and start the game!