GameMaker: Studio Professional

GameMaker: Studio caters to entry-level novices and seasoned game development professionals equally, allowing them to create cross-platform games in record time and at a fraction of the cost of conventional tools!
In addition to making game development 80 percent faster than coding for native languages, developers can create fully functional prototypes in just a few hours, and a full game in just a matter of weeks.
GameMaker: Studio Professional unlocks the full power of GameMaker: Studio, giving you all the added ability to collaborate within a team through subversion, monetize your game with an unprecedented amount of developer services, as well as being able to purchase and plug-in Android, iOS, Windows Phone 8 and HTML5 export modules.