New users can get a $50 bonus on Memorial Day for Knicks vs. Cavaliers Game 4. New York is looking to complete the sweep as Cleveland tries to stave off elimination, setting up a fantastic opportunity to get in the game when you claim the Polymarket promo code.

By unlocking the latest OG promo code offer, new customers can unlock up to a $100 sign-up bonus to use ahead of today's playoff clash between the New York Knicks and the Cleveland Cavaliers.

The Kalshi referral code MASSLIVE1 grants new members a $10 introductory incentive once they complete their first 10 event trades (or allocate their first $10) through the Kalshi platform.