[quote=@Mattchstick]
[@Zarkun]Enemy Unknown is a lovely experience that I highly recommend if you enjoy crying in frustration.

Oooooo plus, if I get to be a Support soldier, I'll have an excuse to start a new XCOM game. 
[/quote]

I've played Enemy Unknown, Enemy Within, and Xcom 2. Just need to play War of the Chosen.