A great horde shooter "zombie" game with fun British voice acting and gritty, run-down and abandoned maps. The perk leveling is slow and takes time but at the same time it was satisfying to complete the different maps in ever rising difficulty modes to get an achievement as proof, it was actually fun to try to collect them all. Can also be played solo somewhat well.
We had regular game nights with my brother hosting a server and usually having the same people come to play with us, many good memories in there. If this game comes to GOG I would have no reason to leave to other platforms to play anymore (Same goes for Killing Floor 2, but this one is more special for me). But I'm not sure if it is possible to bring it here since it needs online connection to save the perk level stuff somewhere in the back-ends. One can only hope!