New users can sign up with the Polymarket promo code ACTION to turn a $10 deposit into a $50 bonus before Thursday Night Football kicks off, then put that credit to work across Polymarket sports markets. If you're looking for action tonight, check out the highly anticipated Orioles vs. Mets matchup (7 p.m. ET, ESPN) to see Pete Alonso's return to Citi Field and the rest of the MLB odds.
The offer credits $50 in trading funds as soon as your qualifying deposit clears, and no separate qualifying trade stands between you and that credit. A 500% return on a first deposit makes this the strongest welcome bonus on any CFTC-regulated prediction market right now.
Lions vs. Bills kicks off the NFL Week 2 schedule, which also includes the Vikings vs. Bears and Jaguars vs. Broncos on Sunday. In CFB Week 3, the world will be watching LSU vs. Ole Miss, as Lane Kiffin returns to Oxford.
Plenty of marquee matchups are coming over the next few days, so enter the code ACTION today and get your $50 bonus so you're ready when the moment arrives.
How to Claim the $50 Polymarket Sports Bonus
Sign up takes about five minutes in the Polymarket US mobile app. Keep a photo ID and your Social Security number handy, because verification asks for both. The code you need is ACTION — type it exactly as written.
- Tap any offer link on this page and download the Polymarket US app on iOS or Android.
- Register with an email address, Apple ID, or Google account.
- Enter the promo code ACTION in the referral or invite code field during registration.
- Deposit at least $10 using Apple Pay, debit, or a bank transfer.
- Automatically get $50 in trading credit once the deposit posts.
Polymarket Sports State Availability
Polymarket US runs as a designated contract market under CFTC oversight, which places it under federal derivatives law rather than state sportsbook rules. That structure opens Polymarket sports markets to traders in more than 40 states plus Washington, D.C., including California, Texas, Florida, and Georgia, where legal sportsbooks remain unavailable. State regulators continue to push back, and recent reporting places Arizona, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, New Jersey, and Ohio outside the current footprint. Confirm access inside the app before you claim the bonus, since the map shifts month to month.
Polymarket NFL Odds: Lions vs. Bills Preview & Prediction
Here are the latest Polymarket sports odds for the Lions vs. Bills matchup:
| Team | Spread | Moneyline | Total Points |
|---|---|---|---|
| Lions | +4.5 (51¢) | 35¢ | Over 53.5 (50¢) |
| Bills | -4.5 (50¢) | 66¢ | Under 53.5 (52¢) |
Kickoff for the Lions vs. Bills game is at 8:15 p.m. ET on Thursday, September 17, 2026. Check Polymarket before the game starts for the most up-to-date odds for this market.
Both teams survived quite a bit of chaos in Week 1. Josh Allen threw for 334 yards and accounted for four touchdowns in a 36-31 comeback win at Houston, sealing it with a beautiful 34-yard strike to Joshua Palmer inside the final two minutes. Detroit needed overtime to escape New Orleans 31-30 after nearly coughing up a double-digit lead, and the Saints came up short on the two-point try to win outright.
Buffalo opens its $2.2 billion Highmark Stadium with first-year head coach Joe Brady calling plays, and Allen enters as the MVP favorite after that Houston performance. Detroit answers with Jared Goff, Jahmyr Gibbs, and Amon-Ra St. Brown, but the offensive line limps in. Guard Christian Mahogany left the opener with a hip issue, tackle Jedrick Wills Jr. carries a questionable tag, and a patched-up front on three days of rest against Buffalo's pass rush reads like trouble.
Somebody, get me some wagons… because I'm circling them at home with the Bills! Short weeks punish road teams that lean on offensive line continuity, and the Lions lack exactly that right now. Brady's offense ranked fourth in scoring last season, with the league's leading rusher, James Cook, behind it, and a new building supplies the crowd energy.
- Lions vs. Bills Prediction: Bills -4.5 (50¢)
If you like our content and picks, sign up with the code ACTION to claim the $50 bonus and start trading Polymarket sports markets on this matchup yourself.
Terms & Conditions for Polymarket Promo Code ACTION
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.
