XCOM 2 is one of the all-time greats—a nail-biting tactical strategy game that ruthlessly taught us all the difference between probability and certainty. Remember, missing on a 95% chance shot isn't impossible, it's just unlikely. It also happens all the goddamn time.
As part of the GOG summer sale, you can snag XCOM 2 for around $2.40/£1.80—that's less than I pay for a big bag of crisps sometimes in the UK, and unless you have far more restraint than I do, you'll be playing XCOM 2 longer than I let snack food sit in my pantry.
