​Sign up with Underdog promo code YAHOOBONUS to get two things: a free entry into Keep Your Million, a survival game, and a 50% match on your first deposit worth up to $1,000 in bonus funds.CLAIM NOW: Up to $1,000 deposit match with Underdog promo code YAHOOBONUS18+ (19+ in AL, CO, NE; 21+ in AZ, IA, IL, LA, MA, and VA). Play Responsibly. Void where prohibited. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call 1-877-8-HOPENY or text HOPENY (467369); MA: 1-800-327-5050; CT: (888) 789-7777 or visit ccpg.org; MO: 1-888-BETSOFF (1-800-238-7633); IA: 1-800-BETS-OFF; LA: 1-877-770-7867; IN: 1-800-9-WITH-IT (1-800-994-8448); TN: call or text REDLINE: 800-889-9789; VA: 1-888-532-3500.This page contains affiliate links. A commission or other compensation may be earned when you click through.Underdog promo codeYAHOOBONUSNew user offerKeep Your Million + 50% deposit match up to $1,000Bonus typeDeposit match, paid in bonus funds and a free contest entryMinimum deposit$10Deposit needed for the cap$2,000Age18+, rising to 19+ or 21+ in some statesEligible states40 states plus DC; check the in-app listInformation verified onSeptember 21, 2026How to claim Underdog promo code YAHOOBONUSClick through from this page to Underdog.Register an account and enter promo code YAHOOBONUS, if it’s not pre-populated.Complete verification to unlock Keep Your Million.Deposit at least $10 to trigger the 50% match.Build your first pick’em entry from the Monday slate.How Keep Your Million worksPlayers start with a virtual $1,000,000 pot in bonus cash.Each round asks a question about a player projection.Split the pot between the two sides however you would like, as long as all of your money is allocated.Whatever lands on the winning side carries into the next round.Survive all 20 rounds, and the remaining balance is awarded as Underdog bonus cash.Underdog promo code termsNew customers only: 18+ in most states, 19+ or 21+ in others. Check your state.Minimum deposit: $10 to unlock the match and activate the game.Match rate: 50% of the first deposit. A $200 deposit returns $100; the $1,000 cap requires a $2,000 deposit.Bonus funds: Not withdrawable and subject to a playthrough requirementKeep Your Million: free to play, with a virtual pot. No deposit is needed to enter.Underdog Predict: a separate prediction market with its own state listEnter code YAHOOBONUS and start Keep Your Million18+ (19+ in AL, CO, NE; 21+ in AZ, IA, IL, LA, MA, and VA). Play Responsibly. Void where prohibited. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; AZ: 1-800-NEXT-STEP (1-800-639-8783) or text NEXT-STEP to 53342; NY: Call 1-877-8-HOPENY or text HOPENY (467369); MA: 1-800-327-5050; CT: (888) 789-7777 or visit ccpg.org; MO: 1-888-BETSOFF (1-800-238-7633); IA: 1-800-BETS-OFF; LA: 1-877-770-7867; IN: 1-800-9-WITH-IT (1-800-994-8448); TN: call or tex