Once you've selected the game you want to play, and have verified that your Mac is capable of running it correctly You can follow these steps to install it and start playing. After you've confirmed that your Mac can run the game you'd like to play, head to the game's webpage from the Steam client and click the Play Game button for games that are free to play or the Add to Cart button for games require purchase. If the game is purchased once you have added the game to your cart, visit the last page and complete the game purchase by clicking on Purchase for myself. If you're purchasing on gamerziz.com to give as a gift to someone else, go to the Buy as a Gift option. Select Play Game after you have purchased the game. Next, select whether you wish to create the Desktop shortcut to the game. Next, change the location where files will be downloaded. (The last option isn't advised unless the player is aware of what they are doing). Wait for the game files to b...