NCAA Tournament season has arrived, and FantasyLabs has you covered if you need to know how to bet on March Madness without DraftKings, FanDuel, or traditional sports betting apps. Between prediction market apps, daily fantasy sports sites and social sportsbooks, there have never been more ways to get involved as a college basketball fan.
Get in on the action in states like California and Texas, where online sports betting isn’t yet allowed. Make your March Madness predictions on apps like Kalshi, Underdog, and Fliff by signing up through the modules below. Read on to learn about each how to bet on March Madness without a traditional mobile sportsbook.
Updated on 3/15/26
Use Prediction Markets to Make March Madness Picks
Use prediction market apps to buy and sell contracts on real world events, such as the NCAA Tournament. Think of prediction market apps like a stock market, not an online sportsbook. Prediction markets offer financial exchange opportunities involving sports event contracts where you and your fellow traders set the implied probabilities.
This peer-to-peer system is completely different to sportsbooks, which set the implied probabilities you end up playing against. Take advantage of shifts in odds by buying prices at low costs and selling when the interest grows too much.
1. Kalshi
Sign up with the Kalshi promo code LABS to play on the best prediction market app in the country. Trade $10 on March Madness to unlock $10 in bonus cash to use on additional NCAA Tournament prediction markets.
- Kalshi Promo Code LABS: Trade $10, Get $10 in Bonus Cash
- States Available: AL, AK, AR, CA, CO, CT, DE, FL, GA, HI, ID, IN, IA, KS, KY, LA, ME, MN, MS, MO, NE, NH, NM, NY, NC, NV, ND, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY, and DC
2. Novig
Register with the Novig promo code BCLABS and spend just $5 on college basketball predictions to trigger $50 in Novig Coins. Novig is as a sweepstakes-style sports prediction platform with a dual-currency system, which differs from a CFTC-regulated exchange.
- Novig Promo Code BCLABS: Spend $5, Get $50 in Novig Coins
- States Available, AR, CA, FL, GA, HI, IL, IN, IA, KS, KY, ME, MA, MN, MO, NE, NH, NC, ND, OH, OK, OR, SC, SD, TX, VT, VA, DC, WI, WY
Play DFS Apps to Make College Basketball DFS Picks
Another way how to bet on March Madness without DraftKinds, FanDuel, or online sportsbooks is through the top DFS sites. Register with Underdog, Sleeper, and Dabble to make NCAA Tournament DFS picks. These apps offer sharp and immersive ways to get action on every action.
Your job on DFS apps is to create entries of player picks from college basketball. Choose whether players finish better or worse than their projected statistics. The more picks you add to an entry, the more money you potentially win.
1. Underdog
There is no better way to begin playing DFS than by signing up with the Underdog promo code LABSNEWS and collecting a $50 welcome offer. Place a $5+ March Madness DFS lineup to net $50 in Fantasy Bonus Entries, which fund your additional predictions.
- Underdog Promo Code LABSNEWS: Play $5, Get $50 in Fantasy Bonus Entries
- States Available: AL, AK, AR, CA, DC, FL, GA, IL, IN, KS, ME, MS, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, VT, VA, UT, WI, WY
Updated on 3/15/26
2. Dabble
A $10 no-deposit bonus unlocks for all new users who sign up with the FantasyLabs Dabble promo code LABS. All it takes for $10 in bonus cash to unlock is for you to create your account. This is the quickest to redeem DFS promo out there, so act now to claim one of the top March Madness DFS promos.
- Dabble Promo Code LABS: Get $10 When You Sign Up to Dabble
- States Available: AK, AR, CA, FL, GA, IL, IN, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TN, TX, UT, VA, WI, WV, WY, DC
3. Sleeper
Round out your collection of NCAA Tournament DFS promos with the Sleeper promo code LABSBONUS to snag up to $120 in bonuses. First, get a $20 no-deposit bonus once you finalize your account registration. Then, use a 100% deposit match promo to pocket an additional $100 in bonus cash.
- Sleeper Promo Code LABSBONUS: Get Free $20 + 100% Deposit Match up to $100
- States Available: AK, AR, CA, CO, DC, FL, GA, KS, KY, MA, MN, NE, NM, NC, ND, OK, OR, RI, SC, SD, TX, UT, VT, WI, WY
Bet on Social Sportsbooks Like Fliff, Rebet, Thrillz
Rounding out the ways how to bet on March Madness without DraftKings, FanDuel, or traditional sports betting apps are social sportsbook platforms. What differentiates social sportsbooks from online betting sites is that the former uses virtual coins instead of real money.
While there are ways to convert certain in-app funds into withdrawable cash, the primary way to make predictions is through virtual currency. Here are the top social sportsbooks to use to make NCAA Tournament predictions on moneyline markets, spreads, and more.
1. Fliff
The first way how to bet on March Madness with a social sportsbook today is with the Fliff promo code LABSMAX offer. Register today and spend $5 on NCAA Tournament picks to trigger $50 in bonus cash. Additionally, net up to $100 in additional bonus cash thanks to a 100% deposit match offer .
- Fliff Promo Code LABSMAX: Spend $5, Get $50 + 100% Match Up to $100!
- States Available: AK, AR, CO, FL, IL, IN, IA, KS, KY, ME, MD, MA, MO, NE, NH, NM, NY, NC, ND, OH, OK, OR, PA, RI, SD, TX, VT, VA, WI, DC
2. Rebet
A generous 100% deposit match offer is up for grabs thanks to our verified Rebet promo code LABS. It doesn’t get any simpler than making your first deposit and pocketing up to $100 in bonus cash.
- Rebet Promo Code LABS: Get a 100% Deposit Match up to $100
- States Available: AL, AK, AZ, AR, CO, CT, DE, FL, GA, HI, IL, IN, IA, KS, KY, ME, MA, MN, MS, MO, NE, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TX, UT, VT, VA, WA, WI, WY
3. Thrillzz
Complete your collection of social sportsbook promos with the Thrillzz promo code LABS. You must bet $10 on March Madness to unlock a $50 free entry. Win up to $100K with this free entry when you submit college basketball picks on any game.
- Thrillzz Promo Code LABS200: Bet $10, Get $50 Free Entry to a $100K Pick ‘Em
- States Available: AK, AR, AZ, CO, CT, DE, FL, HI, IL, KS, MA, ME, MO, MT, NC, ND, NE, NH, NJ, NM, NY, OK, OR, PA, RI, SD, TX, UT, VA, VT, WI, WY
