NFL MNF Betting Promos: Best 5 NFL Prediction Market Promos October 19

Compare the best prediction market and pick’em promo codes for Monday Night Football, including Polymarket, ProphetX, Fliff, Betr, and Rebet offers.

This article has been Fact Checked by Manuel Mora | October 19, 2026

Best Prediction Market Promo Codes For MNF

18+ (19+ or 21+ in some states). T&Cs apply. Availability and offer terms vary by state. Gambling problem? Call 1-800-GAMBLER.

How to Claim The NFL MNF Betting Promos

1. Tap the platform’s link above to open the app or continue on mobile web, the code applies automatically through the tracked link.
2. Register your account with your name, date of birth, address, and any ID verification the platform requires.
3. Fund your account with the minimum amount listed in the table.
4. Place your qualifying trade, pick, or entry.
5. Once it settles, your bonus lands in your account, ready to use on NFL markets all season.

Polymarket Promo Code: Deposit $10, Get $20

Polymarket is the largest event-contract platform available to US users, with markets spanning NFL, NBA, MLB, NHL, college football and basketball, soccer, tennis, and more. New users who deposit $10 or more through code MRGAMB get a $20 trading credit added automatically. Because Polymarket is regulated at the federal level rather than licensed state by state, its core sports markets stay broadly consistent nationwide.

ProphetX Promo Code: Trade $10, Get $20

ProphetX takes the same regulated-exchange approach, registered with the CFTC as both a Designated Contract Market and a Derivatives Clearing Organization. New users who sign up with code MRGAMBLE, fund their account, and place a qualifying $10 trade unlock a $20 bonus credit. It’s currently available in 49 states, with Nevada the lone exclusion.

Fliff Promo Code: Spend $5, Get $50 in Free Play

Fliff runs as a free-to-play social sportsbook covering NFL, NBA, MLB, NHL, WNBA, UFC, and more. New users who enter code MRGAMB, place a $5 pick, and let it settle get $50 in Free Play credited automatically, no separate claim step required. Fliff’s sweepstakes redemption footprint has narrowed in 2026 as more states pass their own sweepstakes laws, so it’s worth checking current state availability before you sign up.

Rebet Promo Code: Deposit Match Up to $100 in Rebet Cash

Rebet operates as a social sportsbook and casino on a sweepstakes model, letting users make picks with Rebet Coins and redeem winnings as Rebet Cash. New sportsbook users who enter code MRGAMBLE, deposit between $10 and $100, and complete verification get that deposit matched dollar for dollar in Rebet Cash, up to $100. Rebet also runs a separate casino offer (code GAMBLE, 50% match up to $50) for players more interested in slots and table games.

Betr Promo Code: First Entry Backed Up to $100

Betr leans pick’em rather than prediction-market pricing, built around choosing whether a player finishes over or under a projected stat line. New users who sign up with code MRGAMB get their opening entry backed up to $100, if it doesn’t hit, Betr returns the stake as Betr Bucks instead of a straight loss.

Prediction Market NFL Betting Promos FAQS

Updated October 2026. This article contains affiliate links. Mr. Gamble may earn a commission if you sign up through a link on this page, at no extra cost to you. Must be 18+ or 21+ depending on the platform and your state. Gambling problem? Call or text 1-800-GAMBLER.