Promotion open to individual legal residents of the 50 United States or DC, age 18 or older (19 in AL or NE) as of entry
For a free Code by mail, while supplies last, send a self-addressed, stamped business size (#10) envelope to: Unlock the Box Code Request, PO Box 9319, Medford, NY, 11763-9319, postmarked by 3/1/12 and received by 3/5/12. (VT residents may omit return postage.) Limit: one request per outer envelope.
OR, from 3/2/12 through 3/11/12 (ONLY), visit http://unlock.tacobell.com for a free Code.
You must use a different Code each time you play.
ENDS AT 11:59 PM (ET) ON 3/11/12
Limit one (1) Game #1 Play per person/email address/household/Cell per day
Five Thousand (5,000) Prizes: a PlayStationŽVita prize pack including  a PlayStationŽVita 3G/Wi-Fi system,  a PlayStationŽVita game,  a 4GB PlayStationŽVita Memory Card (valued at no less than $19.99), and  a choice of a second PlayStationŽVita game (valued at no less than $29.99). ARV: $379.96 each.
Limit: One (1) Prize per person from all games combined.
I mailed away for the free code and when I enter it, it says it has already been used! WHAT!!!! i just received the code in the mail.