This is my second favourite game of all time behind Vampire The Masquerade Bloodlines. I bought it the year it was released and fell in love with it instantly. Wolfenstein 3D introduced me to the franchise, and Wolfenstein 2009 cemented it as my all time favourite.
I love the story, especially how they give us more information on the SS Paranormal Division from RTCW, re-introduce characters from previous games and introduce new characters who would feature in the later games. The whole Thule society and Black Sun dimension aspect was what sealed the deal for me. I really enjoyed how they incorporated that into the game through the Thule medallion and how you could use the veil to do some pretty cool stuff. I also really enjoyed the open world they created between missions. It's fun to just run around and explore, find collectables, and shoot enemies as they appear which helps to keep the excitement level before taking on the next mission so you can play at your own pace.
Luckily I still have my game disc, but now that it's 17 years old, I'm scared that it will eventually stop working and I'll have no way of buying a replacement outside of paying extreme prices for another copy, or heaven forbid obtain it illegally. If it were made available on GOG I wouldn't have to worry about any of that. Plus there's a whole generation out there who most likely have never even heard of the game and would love it as much as we do.
Please GOG, make this happen!!