So I saw this one person at a robotics competition using a laptop and he had a tetris application. I'm not sure what the application is called, so I was wondering if someone recognizes it. Two of the modes the application presents is 1) invisible tetris, similar to the bonus level of survival mode on tetris friends (although i'm not sure if the blinking in survival is present), and; 2) a mode with a 4x4 well (the matrix you play on has four rows and four columns; you must average one line per block). if someone has a URL to a download site with it, it'd be greatly appreciated. Thanks so much!