The Jack promo code is MAXBET. Enter it in the cashier or sign-up form to activate 100 wager-free spins + 100% sports up to $100.
The headline number is 100 wager-free spins + 100% sports up to $100 with a 1x rollover. That is the bit the operator wants you to skim past. Rollover is the multiplier of the bonus value you have to wager before the bonus converts to withdrawable cash.
Whether the offer is actually worth taking depends on what you play. The expected-value math, including the game-type contribution rates, is in the Jack bonuses page and the promo breakdown.
Score breakdown across seven categories, deposit-tested screenshots, payout times we actually measured, and the bits the operator does not mention in their welcome banner.
Read the Jack review