Spec Ops the Line is outrageously good -- it might only work for gamers who are acquainted with the tropes of military shooter games but if you are, this is an instant classic. The actual gameplay mechanics are bland but all I can say without spoiling anything is that there are huge payoffs for soldiering through to the end. It's a major emotional experience.
Put it on your wishlist!
Ending really messed with my head, impacted me more than I ever thought a game could. That and Fullmetal Alchemist have really shaped my feelings on war.