Royal Swipe Casino runs a Mystery Box minigame for players who deposit at least £20 and enter code MBOX. The box awards 25 to 100 free spins at random; the spins work on slots.
It's open to all player categories and can be redeemed once per day. The offer runs from Monday at 00:00 GMT until Thursday at 23:59 GMT, and the promotion ends on 2026-10-29.
Free spins carry a 50xB wagering requirement. That's the full condition set, and the minimum deposit is £20.
