Games X is a Brazilian company responsible for the game Guitar Flash. One of the most popular games on Facebook and with constant presence in the top list of this social network.
The game currently has two versions for PC: a Facebook App and a website. The game is exactly the same, but each place has its own user base.
Fan Page and Twitter of Guitar Flash
Numbers related to the "likes" in Fanpage and "followers" on Twitter.
Guitar Flash also has a mobile version and it is almost reaching 5 million downloads only on Google Play Store. The game is also available for iOS and Windows Phone.
Google Play - https://play.google.com/store/apps/details?id=company.gamesx.guitarflash
App Store - https://itunes.apple.com/br/app/guitar-flash/id1039643229
Windows Store - https://www.microsoft.com/pt-br/store/apps/guitar-flash/9nblggh2s3d8