Just a footnote, but worth to be mentioned I think;
Title says it all. Haven’t really played the Stalker games, but I read the book and saw the movie and Dirty Bomb has some key elements of all three Stalker iterations.
A prohibited zone, “treasures”* and guns for hire to extract all those goodies; well, and contamination. Basically the same kind of contamination as in the Stalker video game.
*Not in all maps of course.