30 Free spins bonus code for Atlantis Gold Casino, Treasure Island Jackpots and Mermaids Palace Casino March 23, 2015 30 Free spins bonus Redeem code: DIG305 On Digging for Dinosaurs Slot ( 5 lines ) Valid on Monday Mar 23rd 2015 USA Ok casinoatlantisgold.com treasureislandjackpot.com mermaidspalace.com