S.T.A.L.K.E.R 2 is at the top of Steam's best seller list.
If you aren't aware already, the developer is a Ukrainian company. The sequel was delayed due to the Russian invasion of Ukraine.
Part of the staff fled to Prague when the fighting started. Others remained in Ukraine and some joined the military.
One of the developers was killed defending Ukraine.
The company has raised a lot of money for Ukrainian charities throughout the war, including $800k to Come Back Alive.
They aren't selling the game in Russia and removed Russian language from the game.