Head to the sunken city beneath the sea and search for hidden treasure in King of Atlantis, a 5 reel, 5 row, 40 payline video slot from IGT. The key figure in this underwater adventure is Poseidon, God of the Sea who appears as a colossal wild and can fill whole reels. Also on offer is a free spins round. Play from as little as 40p to 90p to as high as £800 to £1,800 per spin.

The ruined city of Atlantis forms the backdrop to the reels – those reels include pebbles, sea shells, pots and lutes which pay up to 50 coins and rings and crows which pay up to 100 coins. More lucrative still are the dolphin and mystery woman symbol who pay 200 or 250 coins respectively if you land 5 on a payline. All of these symbols can land fully stacked on all reels.

So far, so standard. What makes King of Atlantis stand out are the Gigantic Wild symbols – these spin on reels 2 and 4 only and expand to fill the position directly to the right. It’s possible to land these wild symbols fully stacked too. This means you can get wilds on reels 2, 3, 4 and 5 at the same time.

Play at the usual stakes and you’ll play with 20 gigantic Poseidon wilds spinning around the reels. Pay extra per spin and you can double or even treble the number of gigantic wilds in play. Play at 65p to £1,300 per spin and the number of gigantic wilds reaches 40. Play at 90p to £1,800 a spin and there will be 60 wilds spinning away.

The wild is also key to activating the game’s Poseidon Free Spins Bonus feature – land the bonus symbol on reel 1 plus a gigantic wild anywhere else on the reels on the same spin and you’ll be awarded 8 free spins. The Gigantic Wild from the triggering spin will be frozen in position for the whole of the feature.

It may not be the flashiest video slot you’ll see as far as visuals are concerned – the stirring soundtrack is rather nicely done though. The gameplay isn’t the most complex either. The game really comes down to the Gigantic Wilds. Land a pair of them fully stacked and you can turn the whole of reels 2, 3, 4 and 5 wild.

Combine that with a high value stacked symbol on reel 1 and King of Atlantis can live up to its name and deliver some right royal rewards if the Greek gods are smiling. I also recommend you play Novomatic’s Lord of the Ocean which is also based on Poseidon.