Friends, Atari has just turned 40. On July 27, 1972, Atari was officially incorporated and what followed were decades of gaming and computing excellence. And it seems that the legendary game maker has just offered its Greatest Hits in iOS for free. Yes, you heard that right. All 100 classic Atari 2600 and arcade games are now available for free, but for a limited time only. “We’ve extended the Atari’s Greatest Hits promo for iOS! 100 classic titles in your pocket for FREE, now until 11:59pm EST, 6/28!” Atari said via its Facebook page. So, what are you waiting for? Get the game now via iTunes. Note that the offer is available for a limited time only. That means that after today, any apps you haven’t downloaded will go back as in-app purchases. Also note that if you’ll remove or reinstall the app, you’ll probably have to spend for it next time. And oh, remember to click on each of the games within the Greatest Hits collection to get all of them.