Thursday Night Football fans can grab the Underdog promo code TOPACTION right now and turn a simple $5 entry into $100 in bonuses in under three minutes, locking in the offer before the Seahawks vs. Broncos kick off NFL Week 6 at 8:15 p.m. ET on Prime Video.
Seattle travels into Denver’s thin air on a short week after a turnover-filled 32-29 loss at home to San Francisco, a letdown that drops the Seahawks to 3-2 and puts Jaxon Smith-Njigba squarely in the spotlight against a Broncos defense that surrenders real rushing yardage every week.
Lock in the Underdog promo code TOPACTION before kickoff, and the $100 bonus lands in the account instantly, ready for tonight’s slate and every matchup the top DFS promos roundup tracks the rest of the season.
Underdog Promo Code TOPACTION: Quick Overview
| Detail | Info |
| Offer | Play $5, Get $100 in Bonuses |
| Promo code | TOPACTION |
| Eligible game | Seahawks vs. Broncos, Thursday Night Football |
| Kickoff | 8:15 p.m. ET, Thu., Oct. 15 |
| Streaming | Prime Video |
| Setup time | Under 3 minutes |
| Bonus release | Instant, after qualifying $5 deposit |
| Last Verified | Oct. 15, 2026 by Tom Fuller |
Seahawks vs. Broncos Matchup with the Underdog Promo Code TOPACTION
| Matchup | Location | Kickoff | Streaming |
| Seahawks (3-2) at Broncos (3-2) | Empower Field at Mile High, Denver | 8:15 p.m. ET, Thu., Oct. 15 | Prime Video |
Seattle limps into altitude off a self-inflicted collapse, four turnovers against San Francisco last Sunday that turned a winnable game into a 32-29 loss. Zach Charbonnet sits out again with his injury, so the Seahawks lean even harder on Jaxon Smith-Njigba and the passing attack to produce points against a Denver defense that gives up 145-plus rushing yards a game, a number that ranks near the bottom of the league.
Seattle still owns the short-week road trip as the lower seed in point total this year, with three of its five games clearing the over.
Denver counters at home off the bye-week rest advantage, and Bo Nix leads a Broncos offense that controls the clock well enough to keep Seattle’s defense on the field. Denver’s own betting trends tell a cautious story: the Broncos cover the spread in three of five games this season but produce an under in four of those five, a profile that points toward a grind-it-out, lower-scoring script at Mile High rather than a shootout.
Vegas books lean toward Seattle by a field goal, but altitude games carry real swing potential, and tonight’s Seahawks vs. Broncos script sets up exactly the kind of live-data environment that rewards a fast start on a first Underdog lineup.
Denver sits at 3-2 as well, and both rosters played in their conference title games last season, so neither sideline treats this matchup lightly, a point the NFL Odds board confirms with a tight spread. That storyline stake backs up exactly why the bonus matters tonight: $100 in credits from the Underdog bonus code funds a full slate of lineups without extra cash on the line.
Why Should NFL Fans Play Underdog Tonight?
Daily fantasy rewards a different skill set than straight betting, and Underdog hands fans direct control over that edge:
- Player props over team outcomes: Build around individual stat lines instead of a final score.
- Flexible lineup sizing: Pick two players or build a full slate, depending on confidence level.
- Best-ball and pick’em formats: Choose the style that fits a fan’s attention span, from one-and-done entries to season-long rosters.
- Lower entry costs: A $5 play unlocks the same upside as a much larger wager elsewhere, especially once the Underdog promo code TOPACTION doubles the bankroll.
- Injury-proof roster construction: Swap players within a lineup window instead of staying locked into one side of a line.
Fans tracking the NFL Futures market all season find Underdog’s player-prop format pairs naturally with that longer-term tracking.
How Does the Underdog Promo Code TOPACTION Work?
- Use one our our Underdog promo code links above
- Download the Underdog app and enter Underdog promo code TOPACTION at sign-up.
- Fund the account with a $5 deposit to trigger the offer.
- Build a pick’em lineup for tonight’s game and watch $100 in bonus credits post to the account right away.
I ran through this exact process myself last Sunday ahead of the early slate, and the $100 bonus hit my account before I finished setting my first lineup, faster than most other DFS apps process a simple deposit. The Underdog bonus code carries no hidden rollover tricks buried in fine print, a detail that matters for anyone trying this format for the first time.
Underdog Promo Code TOPACTION – FAQs
What is the Underdog promo code? The Underdog promo code TOPACTION unlocks a Play $5, Get $100 in Bonuses offer for new users who sign up and fund an account ahead of tonight’s Seahawks vs. Broncos kickoff.
How fast does the Underdog bonus code pay out? The bonus posts instantly after a qualifying $5 deposit, with no waiting period before building a lineup.
Does the Underdog promo code TOPACTION work for every NFL game? Yes, the code applies account-wide, so users carry the bonus into Thursday night’s Seahawks vs. Broncos matchup and every Week 6 game that follows.
Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ & VA) and present in a state where Underdog Fantasy operates. Terms apply. Concerned with your play? Call 1-800-MY-RESET or 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).
