Best free March Madness bracket games from The Lines, DraftKings, Bet365 and FanDuel: Play for monster prize money

You can enter any or all of these contests free of charge and win some huge prizes, and you can also claim thousands of dollars in welcome bonuses from top March Madness sportsbooks. 

The Lines' 'Perfect 16' March Madness Contest

The Perfect 16 March Hoops is available from our friends at The Lines. Enter the contest for free, and then correctly pick the final 16 NCAA Tournament teams. Any perfect entry going 16-for-16 will receive the top prize of $1,000. If there is no perfect bracket, the consolation prize will be awarded to the highest scorer.

Reserve your free entry into the Perfect 16 now!  

The Lines is also running a free "Big Hoops Weekend Leaderboard" contest with a $250 prize pool. Click here to be notified when the game goes live.

DraftKings Sportsbook Free Bracket Challenge

DraftKings Sportsbook offers multiple free bracket contests, and we recommend the Jimmy John's & All The Smoke Bracket Challenge. You are allowed a maximum of one entry. Here are the scoring rules for each round:  

• First round: 10 points
• Second round: 20 points
• Sweet 16: 40 points
• Elite 8: 80 points
• Final Four: 160 points
• National championship game: 320 points

 Check out the payout structure for this contest:

• 1st: $5,000
• 2nd-3rd: $1,000
• 4th-5th: $500
• 6th-15th: $100
• 16th-115th: $50
• 116th-755th: $25
• 756th-1755th: $10
• 1756th-2755th: $5
• 2,756th-7,755th: $1

Sign up for your new account at DraftKings by clicking below, and then enter this contest free of charge! If you deposit $5 or more into a new DraftKings Sportsbook account, you can also claim a welcome bonus worth least $200 and up to $1,200. 

Also read: March Madness bracket tips

BetMGM $10 Million Perfect Bracket Challenge

BetMGM's free contest pays out $10 million for anybody who submits a perfect bracket, and a $100,000 top prize for the highest-scoring bracket. Use our BetMGM bonus code PLAYSPORT to register your new account at the "King of Sportsbooks" and dive into this free-to-play challenge! 

You can submit one entry and the scoring rules are as follows:

• Play-in games: 0 points
• First round: 1 point
• Second round: 2 points
• Sweet 16: 4 points
• Elite 8: 8 points 
• Final Four: 16 points
• National championship game: 32 points

You can also take advantage of a $1,500 bonus as a new customer at BetMGM! Click to register below.

Free Bet365 Bracket Challenge   

Bet365 also offers a free contest this year that offers a $10 million prize for a perfect bracket. Contests rules stipulate that you must be 21 or older. One entry is allowed per customer. 

Also, the top 5,000 highest-finishers players will be rewarded with cash prizes. Here's the payout structure: 

• First place: $100,000
• Second place: $25,000
• Third place: $10,000
• Fourth place: $5,000
• Fifth place: $1,000
• Sixth-20th place: $500

Additionally, other prizes will be earned by the top 5,000 finishers on the leaderboard. You have your choice of March Madness promos to enjoy as well at Bet365. Sign up now and also claim a great promo from Bet365.

2025 FanDuel Tourney Shuffle 'Em Contest

FanDuel's free bracket contest tasks entrants with predicting the Final Four teams in the NCAA Tournament. 

• Click our FanDuel promo link to register a new account and play Tourney Shuffle 'Em

This contest assigns you random teams, and you can then use 20 "shuffles" to try and pick all four teams to play in the Final Four. Anybody who does so grabs a share of the $50,000 prize pool. When you register as a new customer at FanDuel, you'll also have the chance to score $200 in bonus bets just by winning a $5 bet on March Madness! 

March Madness futures odds at top NCAA Tournament betting sites

Who will cut down the nets as national champion next month in San Antonio? Take a look at NCAA Tournament futures to find your favorite team's odds at top March Madness betting sites:

Underdog Fantasy promo code BETFPB: $1,000 bonus for March Madness player props

The Underdog Fantasy promo code BETFPB guarantees a $1,000 deposit bonus for wagering on March Madness. Underdog is a great option for fans in states that have not yet legalized sports betting. 

Note: This Underdog Fantasy bonus is available in AL, AK, AZ, AR, CA, CO, DC, FL, GA, IL, IN, KS, KY, MA, MN, MS, NE, NM, NY, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, VA, WI, WY & All Canadian Provinces except ON.

You must be over 21 to play. Gambling Problem? Call 1-800-522-4700. 1-800 GAMBLER.

Online sports betting is available in Arizona, Arkansas, Colorado, Connecticut, Delaware, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Nevada, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oregon, Pennsylvania, Rhode Island, Tennessee, Vermont, Virginia, Washington, D.C., West Virginia, Wyoming