Best DFS apps, bonuses, Week 17 NFL promo codes, prop picks for Underdog, Sleeper, Betr, more

New users can take advantage of the top NFL DFS promotions and odds boosts from sites like Underdog Fantasy, Sleeper, Betr, Pick6, Boom, ParlayPlay, Dabble and Playsqor on Sunday, Dec. 28, as NFL Week 17 continues. Colts vs. Jaguars, Seahawks vs. Panthers, 49ers vs. Bears and Bills vs. Eagles are some of the matchups that will have an impact on the NFL playoff picture, and stars like Josh Allen, Christian McCaffrey and Jaxon Smith-Njigba will all be in action. Here's a look at some of the top NFL promo codes for parlay sites like Underdog Fantasy, Sleeper and ParlayPlay on Sunday:

Promos for Underdog Fantasy, Betr, Boom, ParlayPlay, Sleeper, Pick6, Dabble, Playsqor

Here's a look at the promo codes being offered by best DFS apps like Underdog Fantasy, Sleeper and ParlayPlay.

Top DFS app picks for Dec. 28

One of the top NFL prop picks at Underdog Fantasy is Eagles quarterback Jalen Hurts to go higher than 191.5 passing yards. Hurts has cleared his passing line in six of his past 10 games when facing a team with a winning record, which is what he'll see when the Eagles take on the Bills. SportsLine's model is projecting 236.8 yards, making it a 5-star pick. 

At Betr, one of the top picks is Bills quarterback Josh Allen going higher than 1.5 passing touchdowns. He's surpassed his passing TD line in five straight games as a home favorite. SportsLine's model is projecting 1.7 touchdown passes, making it another 5-star play.

Betr: Get $10 in Betr Bucks upon registration and 50% up to $200 deposit match 

Click here and use the promo code CBSSPORTS to get $10 in Betr Bucks upon registration and 50% up to $200 deposit match with the latest Betr Picks promo code.

Boom Fantasy: $100 First entry refund

New users can click here and get a risk-free entry up to $100 in Boom Fantasy bonus funds if your pick loses with the latest Boom Fantasy promo code.

DraftKings Pick6: Play $5 on First Paid Entry, Get $50 in Pick6 Credits

New users can click here and make an initial play of $5 or more on first paid entry at DraftKings Pick6 and then get $50 credit in Pick6 credits with the latest DraftKings Pick6 promo code:

ParlayPlay: 100% deposit match up to $100 + a $5 entry ticket

Get started by clicking here, and get a first deposit match of up to $100 and a free $5 contest entry with the latest ParlayPlay promo code:

Sleeper: 100% deposit match up to $100

Click here and use the Sleeper bonus code CBSSPORTS to receive this bonus from Sleeper, which is offered in the form of site credits. 

Underdog Fantasy: Play $5, get $75 in bonus entries

Click here to get started using the Underdog Fantasy bonus code CBSSPORTS2, which offers new users $75 in bonus entries when they enter a $5 (or higher) contest. 

Dabble Fantasy: New users get $25 sign-up bonus

New users can click here and use the Dabble promo code CBSDAB to get a $25 bonus, which comes in the form of site credits.

Playsqor: 100% deposit match up to $100

Click here to use the Playsqor promo code CBSSPORTS, which gives new users a 100% deposit match up to $100.

Responsible gaming

Responsible gambling is taken very seriously across all contest sites. All provide the necessary resources and contact information if you or someone you know may have a gambling problem. The minimum age is 18 for these sites in most states, but it is 19 or older in Alabama and Nebraska and 21 or older in Massachusetts. 

Responsible gambling resources include the National Council for Problem Gambling (NCPG) and Gamblers Anonymous.

Be smart. Bet smart. Wager responsibly. Those in need of help can also call or text 1-800-GAMBLER (1-800-426-2537). Help is available 24 hours per day and seven days per week.