What are the best Cold War games on Steam?

There is no in-game tutorial and there is only an online manual for the game, which means users who are not familiar with this game type and what is expected in play may have a difficult time learning all of the ins and outs. Online video tutorials may help as well, but of course this is all time spent not playing the game n order to learn its mechanics, which some people may not enjoy or have the time for.