GameMaker: Studio PROFESSIONAL unlocks the full power of GameMaker: Studio, giving you all the great features of STANDARD with the added ability to purchase and plug-in Android, iOS, Windows Phone 8 and HTML5 export modules, collaborate within a team through subversion and monetize your game with an unprecedented amount of developer services. Take advantage of GameMaker: Studio’s export modules by targeting some of the biggest platforms to bring your games to the masses.

In order to activate the key please follow the instruction below: Login or create your account: https://account.yoyogames.com/register Click on the left side menu GAMEMAKER and then REDEEM Enter your code as "Voucher Code" and click Redeem Download your software and login to your account there.