The great thing with their VIP bonuses is that players do no need to wait for the casino to post a link or coupon code or contact support in order to claim the bonuses because Shuffle provide CLAIM button.
Anytime a player has a bonus to claim (lets say weekly bonus or level up reward), the claim button will be active and there is also notification for players when they get something to claim.
The slot challenge is also attractive enough, the minimum bet and the multiplier to beat is reasonable enough to chase especially for those who like to play slot games.