You must be at least 21 to bet on NFL games in most U.S. states with regulated sportsbooks, though some offshore sites may allow betting at 18. Most of the offshore sites that we mention here are open to 18 and older players, but a few are 21 and up only.

Yes. While regulated sportsbooks are limited to specific states, offshore betting sites allow you to place bets from within all US states, as they operate outside U.S. jurisdiction. 

Many sportsbooks offer holiday-specific bonuses and contests, and you can always find their regular deposit matching promos for new and existing members. Check the promotions page of your chosen sportsbook for details.

Look for sportsbooks with valid licenses, secure payment methods, and transparent terms. Offshore sites should be regulated by reputable international authorities. These details can be found on their homepage or in their terms of membership.

Each offshore sportsbook site that we recommend accepts cryptocurrencies like Bitcoin, Ethereum, or Litecoin for deposits and withdrawals, offering faster transactions and added privacy.   

Betting limits vary by sportsbook and bet type. High-profile games like those on Christmas may have higher limits, and you can confirm this by testing the limit in the bet slip at each site.

Yes, most sportsbooks allow same-game parlays, combining bets like point spreads, over/under, and player props within a single Christmas game for higher payouts. There are also cross-sport parlays available by combining odds from the NBA or NHL games that happen on December 25^th.