XCOM: Chimera Squad If you want a cheap XCOM game that you can beat quickly, whilst still expecting a level of tactical planning, this is definitely a good buy. April 24, 2020
XCom 2: War of The Chosen I have beaten XCOM 2 multiple times so far, and this DLC adds a whole new set of scenarios. It enough for me to beat the campaign for a third time and still feel like I did something new and exciting. August 29, 2017
XCOM: Enemy Within This expansion add several things like cybernetic, psionic, and genetic alterations to you soldiers to give them that extra ege in battle. November 12, 2013