Dubbed the Zone Kit, Stalker 2’s PC-only modding toolset could be the most consequential part of the update in the long run. The Zone Kit isn’t quite as fully featured as Redkit just yet, but it could get there in time. One particularly remarkable part of the Zone Kit is its size. Now, GSC Game World says players should stop seeing NPCs pop into existence within their field of vision, for a start. The Zone Kit is only available on PC.