Great Blue is a 25 line poker machine with a cool aquatic theme and a great free spins feature where you can get multipliers as high as X15 and jackpots as big as 37,500,000 credits. It also has a gamble option where you can double up your winnings.
Minimum bet on Great Blue is 25 credits or 25c at the lowest 1c credit level. You can play up to 10 credits per line which multiplies the pays by each additional credit bet per line. The highest max bet on the game varies from casino to casino with the average being between $7.50 and $12.50.
Stacked Wild Symbols
The Whale symbol is wild for everything but the scattered Shells and the wilds appear in stacks on all reels. Getting five wilds on a line pays 10,000 credits or 100,000 credits if you're betting max.
Due to the stacks of wilds you can get all of the Whales on the screen at the same time and win the jackpot on all 25 lines.
Free Games Feature
Great Blue has an impressive free spins bonus that is won by getting three or more of the Shells anywhere on the screen. You start off with 8 free games with a X2 multiplier and get to pick two Shells to win extra spins and higher multipliers.
There are five possible outcomes that can be won with the shells with two multipliers (X5 and X8) and three amounts of free games (7, 10 and 15). These can give you a wide range of different free spin outcomes with up to 33 free games or multipliers as high as X15.
During the feature and three or more scattered Shell symbols give you an extra 15 free spins so if you get the 8 games with the X15 multiplier you can get a lot of games with a huge multiplier.
Hit all of the Whales with max bet at the highest X15 multiplier and you win a huge 37,500,000 credits or $375,000 at the 1c credit level.
With the huge jackpots on offer something has to give and that is where the volatility kicks in. It is not uncommon to go through a lot of spins without even winning the feature. This is the price you pay for the chance at winning such huge jackpots.
Double Up Option
Great Blue has an optional gamble feature where you can choose either red or black to double your winnings from the spins.