Otto isn’t necessarily a name you’d associate with the sea, but that’s exactly what this vibrant five reel slot offers. This is one of the first 36 Gaming slots to offer 25 paylines, expanding wilds, free spins and a bonus round in one package. Once we heard this we just had to try it out.

Otto Theme

The slot loads to a samba beat with key notes replaced by the sounds of bubbles reaching the surface of the sea. When combined with the underwater background and plentiful sea life you soon realize that the slot is set under the sea.

These upbeat sound effects return each time you spin the reels or win a prize which due to their stirring nature really add excitement to the game. We also enjoyed the rich and varied cast of characters which included animated rainbow fish, clownfish, octopus, oysters, crabs, sharks, angelfish, rockstarfish (you’ll see what I mean) and different shoals of fish swimming around J, Q, K and A icons.

Betting Options and More Functions

Prizes on this slot top out at $3,000 which can be won when five rockstarfish appear on an active payline when wagering $5. This is the maximum wager with others available down to a minimum of 0.01 per play.

Players can opt for automatic or manual spins using their respective buttons below the reels. When using automatic spins the reels will continue to place bets until you either tell them to stop, you win a big prize or you run out of credits.

Otto Slot Features

The Clownfish wild is capable of replacing any other single icon when it appears on the second, third or fourth reel. The great thing here is that it will expand to fill the entire reel which potentially means more than one winning combination when it appears on the reels. During our review this happened more than once, with the best occurrence filling both the second and fourth reel at the same time!

The treasure chest hugging octopus plays as a scatter with three or more on subsequent reels triggering the free spins feature. Unlike other 36 Gaming slots these free spins can be won again during free spins with all spins using the same value as the triggering bet.

Three or more bonus oyster bonus symbol will trigger the bonus game where larger prizes are offered depending on the number of triggering icons (i.e five icons will award a bigger prize).

Our Take on Otto

The only thing on this slot that doesn’t make much sense is the title, we could’t find a definition anywhere and despite this it still works! If we’d to guess it would have to be because the octopus is called Otto, but who knows? It’s a great game all the same. This slot is unique in so many ways as it includes bespoke icons, sound effects and features - so why shouldn't its name be any different?