Slotastic! has followed up its launch last month of the reef-themed Megaquarium slot from RealTime Gaming by now premiering the developer’s 25-payline Secret Symbol title.Coming complete with Aztec-themed jewelry and cultural artifacts spinning on its five reels, Secret Symbol will award players that collect three pyramid scatter symbols with a free spins feature where wins can be multiplied by up to 20 times.“Until it was overthrown by the Spanish, the Aztec Empire once brought peace and prosperity to most of Central America,” read a statement from Slotastic!.“Now, the new Aztec-themed Secret Symbol slot from RealTime Gaming, which arrived today at Slotastic!, is paying winners all over the world.”To help promote its latest addition, Slotastic! is offering players that have made a deposit in March up to 50 complimentary Secret Symbol spins so long as they enter the coupon code ‘SYMBOL50’ before the end of the month. This March 31 deadline also applies to a special matching deposit bonus worth up to $444 that moreover comes complete with 44 complimentary Megaquarium spins for those using the code ‘SECRETSYMBOL’.“Everyone that’s made a deposit in March gets 50 spins on Secret Symbol while making another deposit before the end of the March will see us double it up to $444 and give you 44 Megaquarium spins,” read the statement from Slotastic!.