If you are looking to play an online slot with the potential to pay out massive sums, with bet multipliers of up to 33x in the feature round and stacked wilds galore, then I am pleased to say you have found it with Great Blue.

Great Blue is a Playtech powered online slot available on those casinos which we recommend that use Playtech software. You may have guessed from reading some of the articles already on Casinos Online that we really do like Playtech Slots. Well Great Blue is one of the reasons why.

The whale symbol acts as a wild and can be stacked, thus increasing your chances of a win. Whilst the clams are the scatters, and hitting three or more clams launches you into the feature bonus round, where that 33x multiplier can be attained.

Great Blue is a 25 payline, 5 reel online slot which is great fun to play and features stacked wilds and scatters which when three or more are hit, the bonus round is triggered. The wild card symbol is depicted by a Killer Whale - Called Great Blue. This is a stacked wild and can appear on any reel and  any of the 25 paylines, which are available to play.

The scatter symbol is a pink clam, which when appears three or more times on any spin, triggers the Great Blue Bonus Round.

Great Blue is a mid to high variance slot game, meaning the payouts can be quite considerable. However the higher the variance, the higher the propensity for your bankroll to be eaten away at quicker.

The feature of Great Blue which is triggered by hitting three or more calms in a single spin, is the truly great part about this slot and is one of the reasons it is still regarded as one of our favourite slots available to play online.

Once triggered, you are taken to a screen whereby you have to pick two clams out of a selection of five clams to choose from. Inside each clam are additional spins and bet multipliers. You can therefore obtain up to 33 free spins and a multiplier of 33. In addition, the Great Blue stacked wild also features in the free spins round, thus making your potential win from the free spins round 100x or more.

However the downside is, we have known it to take 600 or more spins to hit the free games round. So make sure you bear this in mind.

Great Blue is extremely playable. It features very good clear graphics,  decent  sound effects and offers overall great gameplay.

Being a mid to high variance slot, it is a popular with those players, who like to up the ante with their bets a little bit.

Also when Great Blue pays out, it is not uncommon to have wins of 100x or more.

Great Blue is available on all the online casinos which we recommend that utilise the Playtech Software. Being one of Playtech's more popular online slot games.