Sunday's sports slate is packed with playoff intensity, and there's no better time to join one of the best prediction market apps available. No OG promo code is required to claim a sign-up bonus worth up to $100 in trading bonuses when you register a new OG.com account.
As of May 24, new users can sign up and start trading on everything from Game 4 of the Spurs-Thunder Western Conference Finals to the NHL playoffs, WNBA, and MLB.
Trade & Get Up to $100
OG Promo Code Offer: How to Earn Up to $100 in Trading Bonuses
The OG promo code offer requires no code at sign-up — simply create a new account and start trading to unlock bonuses based on cumulative trade and settle volume. New users can earn up to $100 in total trading bonuses by hitting the following milestones:
- Trade and settle $10 to receive a $10 bonus
- Trade and settle $100 to receive an additional $15 bonus
- Trade and settle $250 to receive an additional $25 bonus
- Trade and settle $500 to receive an additional $50 bonus
For example, if you trade on whether the San Antonio Spurs will win Game 4 of the Western Conference Finals and your position settles correctly, your payout is credited to your account and counts toward your cumulative volume. If your trade does not go your way — say the Oklahoma City Thunder pull off the road win — your settled volume still counts toward unlocking the next bonus tier. The offer is available to new users in all U.S. states except New York and Arizona, though users in Illinois, Massachusetts, Maryland, Michigan, New Jersey, Nevada, and Ohio may claim the bonus but cannot apply it to sports trading. You must be physically located in a legal OG state to participate, and the offer expires Dec. 31, 2026.
For a full breakdown of what's available, check out the latest best prediction market promos compared side by side.

How to Claim Your Bonus for NBA Playoffs, NHL, WNBA, and MLB on Sunday, May 24
Getting started on OG.com is straightforward. No promo code is needed — just follow these steps to claim your bonus and start trading on today's action:
- Register: Visit OG.com or download the OG app and click "Sign Up." Enter your email address, verify it, and then verify your mobile phone number. Create a passcode and complete identity verification by providing your full name, date of birth, and the last four digits of your Social Security number. You may also be asked to submit a government-issued ID, proof of address, or a selfie.
- Deposit funds: Make your first deposit using an accepted payment method, including debit cards, Apple Pay, Google Pay, ACH bank transfers, or wire transfers. ACH transfers require a minimum deposit of $1, while debit cards require a minimum of $10.
- Start trading: Browse available event contracts across sports, politics, culture, financials, and crypto. Select an outcome — such as whether the Spurs or Thunder will win Game 4 — choose "yes" or "no," enter your trade amount, and confirm. As your cumulative trade and settle volume grows, you will automatically unlock bonus tiers up to $100.
- Withdraw earnings: Once a trade settles in your favor, your winnings appear in your account. Head to your portfolio, click "Withdraw," link your bank account via Plaid, and request between $1 and $100,000 per day. Most withdrawals are processed within 24 hours.
For a deeper look at the platform before you get started, read the full OG.com Review.
Affiliate Disclosure: Our team of experts has thoroughly researched and handpicked each product that appears on our website. We may receive compensation if you sign up through our links.
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