Polymarket Invite Code BOOKIES: Get $20 Bonus for Hawks vs Knicks Predictions (Apr. 28)

Q: Is Polymarket legal in the U.S.?

Yes. Polymarket acquired QCEX, a CFTC-registered exchange, and relaunched for U.S. users in January 2026. It operates as a designated contract market under federal oversight. Some states are currently excluded from the beta.

By Manuel Mora

Apr 28th, 2026 8:03 PM EDT

New users who sign up with the Polymarket invite code BOOKIES can deposit $20 to receive a $20 trading bonus, while also gaining faster access instead of joining the platform’s large waitlist.

Polymarket Invite Code Details - April 2026

Polymarket Invite Code	BOOKIES
Welcome Offer	Deposit $20, Get $20 Trading Bonus
Minimum Deposit	$20
Eligible Users	New Polymarket US users, 18+, in eligible states
Excluded States	AZ, IL, MA, MD, MI, MT, NV, OH
Last Verified	April 28, 2026

For a full platform walkthrough, state availability, and terms, visit our Polymarket promo code review.

Tuesday’s playoff schedule features six Game 5 matchups across the NBA Playoffs and Stanley Cup first round, with four potential elimination games on the board.

How To Claim the Polymarket Invite Code BOOKIES

Follow these steps to skip the waitlist and start trading today.

Download the Polymarket US app on iOS or Android.
Enter Polymarket invite code BOOKIES when prompted during registration.
Create your account using Apple, Google, or email sign-in.
Verify your identity using your name, date of birth, address, and a valid government-issued ID.
Deposit $20 using debit card, ACH, Apple Pay, or crypto.
Receive your $20 bonus and start trading playoff contracts immediately.

The code also bypasses Polymarket’s waitlist, which currently has close to one million users in queue. Without the code, access to the U.S. beta is not guaranteed on any specific timeline.

Polymarket Invite Code Terms and Conditions

The Polymarket invite code offer is simple, but reviewing the terms and conditions can help new users understand how the promotion works and what is required to qualify.

Available to new Polymarket users only
Users must be 18 years or older
A minimum $20 deposit is required
The $20 bonus is credited after the qualifying deposit is completed
Limited to one invite code redemption per user

What’s on the Board: NBA & NHL Game 5 Matchups for April 28

This is one of the heaviest single-day playoff slates of the postseason so far. Four series could end Tuesday night, while two pivotal Game 5s in tied series will shape the second round. Here is the full rundown of contracts available on Polymarket.

NBA Playoffs - April 28

Matchup	Time (ET)	Series	Stakes
76ers at Celtics	7:00 PM	BOS leads 3-1	Boston can close out the series
Knicks vs. Hawks	8:00 PM	Tied 2-2	Pivotal swing game; home court at MSG
Spurs vs. Trail Blazers	9:30 PM	SA leads 3-1	San Antonio can advance to Round 2

Stanley Cup Playoffs - April 28

Matchup	Time (ET)	Series	Stakes
Bruins at Sabres	7:30 PM	BUF leads 3-1	Buffalo can clinch first series win since 2007
Wild at Stars	8:00 PM	Tied 2-2	Winner takes series lead in must-watch Central battle
Ducks at Oilers	10:00 PM	ANA leads 3-1	Anaheim can eliminate McDavid and Edmonton

Polymarket’s contract pricing on these games reflects real-time market probability. Unlike a traditional sportsbook where odds are set by the house, prices here move based on what traders are buying and selling. A contract priced at $0.65 means the market assigns a 65% probability to that outcome.

Is Polymarket Legit?

Yes, Polymarket is a recognized and trusted platform in the prediction markets industry. It has handled billions of dollars in trading volume and is known for resolving markets through a transparent process based on real-world outcomes.

Where Is Polymarket Available?

Polymarket US is in a limited beta rollout. The platform is currently unavailable in AZ, IL, MA, MD, MI, MT, NV, and OH. Users must be 18+ and physically located in an eligible state to trade. State availability is expected to expand as the beta progresses. If Polymarket is not available in your state, Kalshi offers sports contracts in 40+ states and non-sports markets nationwide.

Polymarket vs. Kalshi: Quick Comparison

Feature	Polymarket	Kalshi
Promo Code	BOOKIES	BOOKIES
Welcome Bonus	Deposit $20, Get $20	Trade $10, Get $10
Min. Deposit	$20	$1
Fee Structure	0.10% taker fee	~1% per trade
Sports Availability	U.S. beta (limited states)	40+ states
Regulation	CFTC-regulated	CFTC-regulated

Kalshi has wider state coverage and a lower barrier to entry. Polymarket offers deeper liquidity and a larger bonus relative to its minimum deposit. Both platforms use the referral code BOOKIES. For a detailed breakdown of Kalshi’s offer, visit our Kalshi referral code BOOKIES review.

Polymarket Invite Code FAQ

What is the Polymarket Invite code?

The Polymarket Invite code is BOOKIES. Enter it during sign-up to receive a $20 trading bonus after depositing $20 and to skip the waitlist.

Is Polymarket legal in the U.S.?

About the Author

Manuel Mora

More About Manuel

Manuel is a DFS betting expert for Bookies.com, specializing in daily fantasy sports strategy, pick’em contests, sportsbook promos, and player prop analysis. He covers the latest offers from leading DFS operators and betting platforms, helping readers understand how to maximize bonuses, compare apps, and make smarter wagering decisions.

21+. Prediction markets involve risk. You can lose your entire stake. Not available in all states. Bonus terms subject to change. Trade responsibly. If you or someone you know has a gambling problem, call 1-800-GAMBLER.