It tells the tale of Tetris's journey from the Soviet Union to global recognition, though how much of it is true remains unclear since I haven’t looked into the real events behind it. There's apparently a documentary available with many of the individuals portrayed in this film, which could be worth checking out. Regardless, the movie moves quickly and holds your attention, so I can overlook minor inaccuracies. My initial viewing was complicated because the subtitles weren’t functioning, and given all the different languages and translation involved, it wasn't immediately obvious that I was missing parts of conversations. I ended up restarting with captions enabled, and really, you need those to follow everything that happens.

Source on TMDB