If you are a fan of Team Fortress 2 items and/or free video games, you’re in luck. The folks over at Steam are running a pre-purchase rewards program, and it works like this:  If enough people pre-order XCOM: Enemy Unknown , they will unlock 3 exclusive XCOM-themed items in Team Fortress 2. If even more people pre-order, they will unlock a free copy of Firaxis’s other big title, Civilization V (and yes, you can gift it to a friend if you already own it).

I don’t know about you, but the ability to run around as the Soldier in the new co-op Mann vs Machine mode sporting the “crafty” 1994 X-Com flat-top haircut is an opportunity that is just too good to pass up. And if Soldier isn’t your bag, maybe the Sectoid-shaped Area 451 mask for the Pyro will do it for you. And no matter your class of choice, you can wear the XCOM-inspired Vigilant Pin with pride, to show everyone your dedication to killing all things alien (be it robot or extraterrestrial). If you need convincing, just check out the image at the top of this blog post. Look at it. It’s glorious.

You can pre-order XCOM: Enemy Unknown on Steam right now. Be sure to tell all of your friends and random strangers on the street, because the rewards unlock as the more people pre-order, and the more people pre-order, the more stuff everyone gets.