Apparently it's happening.
Tetris Movie Adaptation Announced - IGN
Here is something that someone spoofed about what a movie based on Tetris could be like.
Source
Tetris Movie Adaptation Announced - IGN
Here is something that someone spoofed about what a movie based on Tetris could be like.
Source
The film will be a "science-fiction epic" produced by Threshold chairman Larry Kasanoff and executive produced by The Tetris Company with Threshold's Jimmy Ienner.
"Everyone knows that Tetris is one of the best known, most beloved brands in the world," says Kasanoff. "What everyone doesn't know yet is this epic sci‐fi story that we’re going to tell. That's what's really exciting."
Threshold previously worked on movie adaptations of fighting game Mortal Kombat.