Underdog Fantasy has grown to become one of the most popular DFS operators in the US since its inception in 2020. It has helped to fill the void of some DFS sites that have left the market and has done so by offering an excellent range of games, such as Pick’em and Best Ball while also having great features like Rivals Matchup.
Underdog Fantasy is a great option for players who like to participate in season-long fantasy tournaments but don’t necessarily want to spend loads of time changing and managing their lineups. It has tapped into a niche of being a very detailed DFS app with all of the nuts and bolts you need, but that doesn’t require the time-consuming effort other DFS sites do.
With that said, this guide will explore some excellent alternatives to Underdog Fantasy that will suit all types of players, and all of them don’t require real money to play.
Best Alternatives to Underdog Fantasy
Underdog Fantasy is a very good platform, there is no doubt about that, but no brand is perfect. For example, although I think there are enough sports available on Underdog Fantasy, some other apps offer more range, so some players may feel the market coverage isn’t enough. State availability is another factor, and Underdog Fantasy is not live in some US states, so you might have to look elsewhere to get your social sports betting and casino gaming fix.
We are going to look at some betting apps that have similar sports coverage and equally excellent features. Some of these are not far away from real money US betting sites, such is their excellent range of markets and easy-to-use mobile apps.
#1. Thrillz

Thrillz is a mobile only social sportsbook, and you can get the app from the App Store (iOS) or the Google Play Store (Android). Once you have downloaded the app to your device, you can make picks for the NFL, NBA, NHL and several more markets, including spreads, totals, player props, and the standard moneylines. As well as the traditional picks, you can also create ‘Squads’ and go up against your friends which makes it even more fun. This sportsbook certainly has a big focus on the social side of things, and puts a lot of emphasis on interactivity.
When you first download the Thrillz app and register for an account, you will receive a welcome bonus of 3,000 Thrillz Coins and 3 Thrillz Sweeps. You also have the option to get 100% on your first Thrillz Coins purchase up to a maximum of $25.
#2. Fliff

Fliff was one of the first social betting apps to go live in the United States and has gained quite the following since it launched. Like Thrillz, there is no desktop site with Fliff, it is purely a social mobile betting experience. It offers options on all of the most popular domestic sports, and in addition to standard bet types like moneylines Fliff also offers exciting player props and game projections.
Fliff taps into the social element with social media giveaways, daily login bonuses, and other promos, but the biggest feature is the daily challenges. These are set missions that you can participate in every day to try and earn XP, which can be exchanged for Fliff Coins or redeemed for gift cards. Also, look out for boosted odds mechanics, which can add another 10% to your potential winnings.
#3. Rebet

Like the other sites on this page, Rebet has a big focus on social sports betting, but goes about it in different ways. Rebet has superior market coverage to a lot of other similar apps, and also offers more advanced betting features. Instead of just offering the standard sports and leagues, Rebet also delves into the niche market, giving players odds on sports such as table tennis, rugby, tennis, and even chess. It offers live bets, futures, and player props if you are after a more exotic offering.
The big appeal of this app is the social features. Like the Thrillz app, you can build squads and compete against your friends, ‘re-bet’ what your friends are betting and share your bets. If you like going into group parlays with your friends and you see betting as more of a social activity than just individual, then Rebet is definitely the best choice for you.
What to Look for in Sites Like Underdog Fantasy
If you are on the look out for a new social betting site, it is a good idea to consider a few things to make sure you will have a good experience and all of your details are safe. Here is the list of key factors to keep in mind:
Bonuses
Who doesn’t like getting something for free? Bonuses can really improve your gaming sessions and keep you engaged for longer. Keep an eye out for generous welcome packages, freebies and ongoing promotions that keep giving stuff away. Make sure you read the terms and conditions so you know what you are getting into, and if you are happy, take advantage of them.

Wide Selection of Sports Markets & Games
It is boring just having the same, small list of things to choose from. You want variety. Look for sites that have a wide sports market coverage and a good mix of casino games. More games like will mean you will have a better chance of finding something you enjoy.
State Availability
It is true that more and more states are legalizing sports betting every year, but there are still many regions where betting still looks some way off becoming legalized. However, social betting sites don’t fall under the same legalities as traditional real money betting sites, and are therefore available in states where sports betting is still illegal. Still, this will vary from state to state, so make sure you check the state limitations for these sites before playing.
Winnable Prizes
You can win Sweepstakes Coins on sites like Underdog Fantasy, but it is even better if you can turn those coins into something real. Make sure you find sites that don’t make it overly complicated to redeem your SC Coins. You want clear instructions on how you can cash in when the time is right.
These Underdog Fantasy Alternatives are Worth a Try
To summarize, if you are looking for a good alternative to playing at Underdog Fantasy, then don’t look any further than the options we have listed above. All of these sites have an excellent range of markets and games along with features that encourage you to interact with friends as you play. It is just a case of working out which site meets your needs the most and going from there.
