Online casino Slotastic is offering its players a Mexican treat throughout May with up to 620 free spins on offer on the wrestling-inspired Lucha Libre slot.A total of 20 free spins are available every day throughout the month. Simply use the coupon code MAYSPINS when making a deposit and the extra spins will be added to your account. Do that every day throughout May and a whopping 620 free spins will be heading your way.