Missouri Sports Betting Pre-Registration: Live Updates for MO Betting Launch 2025

Although Underdog's sportsbook product has yet to launch in Missouri, you can take part in Underdog Pick'em Champions and Underdog Drafts! Right now, if you use the Underdog Missouri promo code TOPACTION, you will get $100 in bonus entries when you play $5! Here is how it works:

1. Navigate to Underdog by clicking this link or any of the others above
2. Open your first account in Missouri by entering a username, your email address, password, and date of birth (must be at least 18+ or 19+/21+ in select states)
3. Enter promo code TOPACTION
4. Make your first deposit of at least $10 (the minimum) and play $5 to get your bonus

Create your new bet365 Missouri account now to take advantage of one of the top Missouri Sportsbook promos that will be available on launch day: a $365 bet-and-get promo. Use this bet365 Missouri promo on launch day by placing a $10 wager or more on odds of -500 or longer. Regardless if your first bet wins or loses, you unlock $365 in bonus bets. Here is how it works:

1. Navigate to bet365 by clicking this link or any of the others above
2. Open your first account in Missouri before Dec. 1, 2025 and make sure you use promo code TOPACTION.
3. Deposit fund and place your $10 or more bet, then after it settles, you will receive the $365 bonus.

Let's not forget about one of the OGs in Caesars Sportsbook. As with the other Missouri sportsbooks listed here, you can get a head start on "betting like a Caesar" by using promo code ACTION4MO and claiming this offer ahead of full launch on Dec. 1: Bet $5 Get $150 if Your First Bet Wins + 5x Profit Boosts! Here is how it works:

1. Navigate to Caesars Sportsbook by clicking this link or any of the others above
2. Open your first account in Missouri during the promo period (make sure to use code ACTION4MO)
3. Deposit at least $5 before the end of the promo period

DraftKings was one of the first operators to gain access to Missouri, thanks to an untethered license. Now that the pre-registration window is open, DK is offering new folks $300 in Bonus Bets when they sign up before 12/1.

Day 2 is upon us! 🗣️ Remember, you can still create an account and lock in any pre-registration bonus from your favorite sportsbook. Just keep in mind that legal wagering hasn’t opened yet. If you missed yesterday’s launch, explore all the available pre-reg promos, including this one from BetMGM!