'sup. If you downloaded Tetris, it's gonna ask you for an update. Here's the patch notes for Tetris version 3.15
Tetris Patch Notes V. 3.15 • "Options Menu" has been added. • Background music may now be toggled on and off. • A new graphics option has been added: Monochrome (a.k.a. Game Boy '89). • A new play mode has been added: Hell (courtesy of Randall Munroe!) • Lock delay continues to be non-existent. Deal.