Game Maker: Studio

Game Maker Studio is the follow up for Game Maker 8.1, and allows multi-platform publishing among other things.

Multi-Platform publishing
Game Maker: Studio allows the user to program a game in GML and export it to the following devices: For any other export than Windows and Mac you would need to pay extra, or get them all with the "Master Collection".
 * Windows
 * Windows 8 (native)
 * Linuz (Ubuntu)
 * Mac OSX
 * IOS
 * Android
 * HTML5
 * Tizen
 * NeoGeo (unusable as far as I know)

Shaders
One of the new featers as far as game development goes are shaders. These allow you to make your game look better by adding effects! The shaders were added in version 1.2 and give Game Maker: Studio a feature that most other GUI based development tools don't have.