Register now with the Underdog promo code TOPACTION ahead of tonight's must-see Thursday Night Football clash to unlock a $100 new user promo. Unlock $100 in bonus entries today by placing a $5+ player pick 'em entry after you create your new Underdog account.
Click on the sign-up module below to sign up with theUnderdog promo code TOPACTION today, Thursday, Dec. 4, 2025. Make your first entry of player picks on the Cowboys vs. Lions tonight in what could be one of the highest scoring NFL games of the season.
If you're in Missouri and are wondering about the Underdog Missouri promo code TOPACTION, we have you covered. Missouri is the latest state where Underdog has gone live, and new signups can claim the same $100 new user offer in the Show-Me State by signing up today.
| Underdog Sign-Up Bonus | States Available | Underdog Promo Code |
|---|---|---|
| Play $5, Get $100 in Bonus Entries | AL, AK, AR, CA, DC, FL, GA, IL, IN, KS, ME, MO, MS, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, UT, WI, WY | TOPACTION |
Underdog Promo Code TOPACTION: Make These Cowboys vs. Lions Predictions for $100 Bonus
If you're excited for the Dallas Cowboys and Detroit Lions to do battle tonight, the Underdog promo code TOPACTION is one of the promos you must sign up with ahead of kickoff at 8:15 p.m. ET on Prime Video. Register your new Underdog account now and pocket $100 in bonus entries after you submit a $5+ player pick 'em entry on tonight's game.
New players to daily fantasy sports (DFS)a s a whole who aren't familiar with player pick 'em entries need not worry. Simply put, player pick 'em entries consist of predicting whether players achieve a "Higher" or "Lower" statistical amount than their projections. Take a look at an Underdog pick 'em entry I made for tonight's game below:
| Player | Team | Pick |
|---|---|---|
| George Pickens | Dallas Cowboys | Higher Than 65.5 Receiving Yards |
| CeeDee Lamb | Dallas Cowboys | Lower than 80.5 Receiving Yards |
| Jahmyr Gibbs | Detroit Lions | Higher Than 74.5 Rushing Yards |
After I sign up with the Underdog Fantasy promo code TOPACTION and insert my picks above into an entry, I must decide if I want to make my entry a Standard one, or a Flex one. See the way each entry pays out money below:
- Standard entry: I win 6x if all three of my Cowboys vs. Lions picks above are correct.
- Flex entry: I win 3x if all three of my Cowboys vs. Lions picks above are right. If just two of my three picks hit, I win 1x.
Need more convincing still that the Underdog promo code TOPACTION is worth signing up for? Consider what Action Network sportsbook expert Nick Sterling said about this DFS offer:
"Whether online sports betting is available in your state or not, you'd be remiss to not take advantage of the $100 new user promo Underdog offers new players."
How to Sign Up With the Underdog Fantasy Promo Code TOPACTION Today
If you're ready to register with Underdog and create a player pick 'em entry on the Cowboys vs. Lions tonight, here are the steps you must follow:
- Click on the following Underdog promo code TOPACTION sign-up link to be directed to the new user landing page.
- Once redirected, make sure the Underdog Fantasy promo code TOPACTION is filled into the appropriate field.
- Enter your personal identifying information as prompted to have your location and age verified.
- Read and agree to the Underdog Terms of Use and Privacy Policy when presented to you.
- Make your $10+ qualifying first deposit into your account using an approved Underdog banking method.
- Place a $5+ Underdog pick 'em entry on Thursday Night Football tonight to unlock $100 in bonus entries.
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog operates. Terms apply. Offer not valid in MD, MI, NY, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
