Top Ten Biggest Dollar Prize Pools

5,000 prize packs are available across the instant win and the challenge. Prize pack includes PlayStation Vita prize pack including a PlayStation Vita 3G/Wi-Fi system, a PlayStation Vita game, a 4GB PlayStation Vita Memory Card, and a choice of a second PlayStation Vita game. To enter the challenge, submit a photo or video showing 'what you would do to win a Playstation Vita system'. For a free Code by mail, 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 register for a (free) Sharecare account to play. Track your weight loss for a chance to win one million dollars and a trip for the winner to New York for a taping of the Dr. Oz Show.

Ten sweepstakes grand prize winners win choice of a Wild West, Great Plains or Eastern Express adventure. Instant win prizes are $100 cash cards.

For a free code, go to the site and click on the 'Get a FREE Code here' hyperlink. Sweepstakes grand prize is a trip to Universal City, CA and a chance to win $1,000,000. Instant win prizes include tickets to Universal Hollywood, Blu-ray movies, HDTVs, Toshiba Tablets, game codes and more. See site for full details.

Over 20,000 instant win prizes, including $5,000, B&N Nook Touches, B&N gift cards and Lindt gift baskets. You can get a free code by clicking on 'Get A Free Game Code' after logging in.

24 instant win prizes each day of various cash cards ranging from $50 to $500. Sweepstakes grand prize is $100,000. Prior to April 5 you will need to mail in to receive a code to H&R Block $100,000 Refund Giveaway, P.O. Box 251328, West Bloomfield, MI 48325. See rules for details. After April 5 a free code can be obtained directly from the website.

Sweepstakes grand prizes are a Pit Crew Experience, three Nascar Race Weekend Experiences and one Sprint Cup Series Champions Week Experience. Instant win prizes are various hats, shirts, gift cards, etc. See site for more details. To enter the Instant Win sweepstakes without purchase, on a plain piece of 3? x 5? paper, hand print your complete name, street address (no P.O. Boxes please), city, state, ZIP code, birth year, email address, plus daytime and evening telephone number. Mail entry in a hand-addressed, business-size (#10) envelope with first class postage affixed, to: 3M ?Your Ticket to the Track? Sweepstakes, c/o E Group, Inc., 110 North 5th St., Sixth floor, Minneapolis, MN 55403. Each entry must be postmarked by December 10, 2012. See site for further details.

Free Code: Use the following Code: 16000-12345.