Arguably one of the best source of video games for PC and Mac users!
Steam is an online distribution platform mainly meant for games. In the beginning, it was reduced to its editor's game only. Nowadays, this application makes various kinds of more than a hundred thousand games available.
Steam allows you to buy available games of your choice and to download them. Alternatively there are hundreds of free to play options. To play any game, all you need to do is create an account (which is very quick and easy to do), and then download the game. Once the games are installed onto your PC you are ready to play!
There is no need for any disc which eliminates the possibility of a game not working because the disc was damaged. Additionally, you no longer need to worry about misplacing serial numbers for games, as all of this information is contained within your Steam account.
In addition to these features, Steam gives members the ease of some community's options. The program includes, for instance, an instant messaging client which makes you able to communicate with friends or to join them right in a game.
You can download Steam for Mac here.