If you really like EA games then this is great! If you want a little more choice, have a look here to see the best online games stores!
Origin is a free application that is simple and easy to use. It allows you to access all of the EA (Electronic Arts) content from your PC desktop, with the fundamental addition of being able to give you the real possibility of installing certain titles, that for some users were previously unable to do.
From within the Origin app you can see what is new, download free game demos and even buy and download complete games. Alongside these full games, you will find free patches and updates for everything that you have already downloaded from the site. And if you want to have a more fun experience, you can connect with your friends, share things, chat and play together.