Getting a free game isn't an impossibility.
Microsoft set up a program similar to that.
www.microsoft.com/retailIf you can confirm that u work in a store that sells any microsoft products u can sign up for the program. Basically the program lets u take quizes about new products and other info that retail stores should know about like sales promotions. Every completed quiz gets u points and points add up to free games or other goodies.
So its not an impossibility, then again microsoft can waste some money on this program (a program that is probably costing them too much). Heck i use the program to get xbox games and get store credit at other stores and get GCN games, lol.