It begins as an authentic wartime game and then becomes yet another sci-fi XCOM wannabe.
The game itself is turn-based (duh). Each mission may take several hours to complete, especially if you want all of your operatives to survive with least damage. The survival is not crucial, but during each mission their various skills improve and they earn point that can be used to develop new skills, such as disarm mines, taking aim in complete darkness, etc. 90% of weapons are the ones from WWII era and each has its own pros and cons. You may develop a liking to some and never use the others, it's completely up to you. Everything in the game is destructible. It's pretty fun to completely demolish a building as long as that building doesn't contain your objective, then you're stuck. So, you have to be careful what kind of explosives to use, when and where. The game have some objectives to follow. I did follow them at first until the abovementioned culture shock. Then I just blasted my way through levels occasionally picking up clues and hoping for the best and actually made it to the end. I guess individuals with attention span of a 7-year-old can make it also.