I thought it was gonna be about the guy who actually made Tetris, but no they cover that in 2 minutes at the beginning and the rest of the movie is about the American copyright lawyer trying to get the rights for Nintendo.
It's literally all about how bad the USSR is and how good corporations like Nintendo are. When the American arrives in Moscow they take his passport down to an evil KGB bunker and the whole movie shifts to being tinted blue and grey.
There's literally a scene where the Russian programmer says to the American "we want to be free, we want your coca cola and Levi's jeans". If it wasn't so boring this would read as satire of American media in the Cold War.
The 90s were weird because without the Soviets Hollywood didn't know who to cast as the evil bad guys in Action movies. They tried various middle eastern terrorists. They tried South African mercenaries with names like Hans and Fritz. Nothing really stuck. When 9/11 happened you could hear a palpable sigh of relief from California that there was finally a credible official enemy again for them to demonize in the annual action blockbusters.