I work at a Gamestop in IL (chi suburbs) and we just started the deal today. It hasn't "officially" started yet, some stores just got the O.K. early. If it's a bigger store, or one with alot of trade-ins, they should have it going. Should run through Sunday at least but it will probably go longer.
Here's the details, to answer a few questions I've seen posted.
Combinable on any combo of games i.e. used N64, GBA, PS2, XBOX, DVD's etc. The only things excluded would be any special sale items (like clearanced NES,SNES, etc.....)
Used system can be part of the B2G1Free, but you CANNOT buy three systems.
Any combo of games, accessories, DVD's is fine. Freebie has to be equal or lesser value.
B&M stores have no restriction on game prices. I.E. no "games have to be 29.99 or more" that's just online.
No returning the free game and trying to get a refund/credit. Get games you like, because we can't extend the deal past the expiration date if you try to return the games because you don't like the one's you chose.
Post any other Q's.