Fate of the World is a really deep (and dark) Simulation of our upcoming years. Especially with all the available DLC it has lots and lots of content to keep you busy for a long while and make sure you'll get money's worth. Like all simulations and simulation games it is obviously not a complete and perfect replica of the real world. Of all the Simulation-games I've played throughout my life it is one of the deppest and most realistic simulations though.
You should definitely not play this game if you're afraid to start over again many times until you reach one of the desired endings. There is a reason that the 7th word in the description is "dramatic". You'll often run into bad ends or simply won't reach the neccessary mission goals in time. A great idea can backfire and make you think twice about adopting it the next time around.
The game presents choices for every region in "cards". This makes it look like a card-game to some people but it really isn't. I think the game desingers just tried to find a name to summarize "Policies", "Research Programs", "Military Actions", etc. and then they though "Hey, those things are presented on stuff that looks like cards." So they went with cards. Don't be turned away becaues you don't like card-games. FotW is not a card game and it might just aswell be called "decisions"; There's no deck, no drawing of cards, etc, etc.
Play this game if:
-You like mental challenges
-You're not afraid to see our Earth go to hell (because of your decisions)
-You think Trial-and-Error can be fun
Don't play this game if:
-You hate starting over
-You hate going through menus and just want to "play play play"