If for some reason you still haven't let XCOM: Enemy Unknown
get its sharp, slimy hooks into you, Green Man Gaming
has a heckuva deal on the PC version. Already discounted to $20, you can knock it all the way down to 16 bucks with the coupon code GMG20-P4DLK-FKYRS.
We suggest you use the savings on building satellites. Like, as many as possible. Always.