The single-player campaign of Call of Duty: Black Ops Cold War is definitely worth playing. It only takes a few hours to play through the entire storyline including side missions: Operation Red Circus and Operation Chaos. All these main and side storylines are the place where the game shines. The characters have depth, excitement is built up and a grand finale awaits you. Where in some areas small steps have been taken back in terms of realism and artificial intelligence, I am glad that they have made progress in terms of offering variation in playing style and possible choices. I had fun with the single-player campaign, and I recommend it to everyone.