Hidden Slot Machine

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Hidden is offered via ELK Studios and it is available at NYX powered casinos. In terms of the theme that is provided, the developer wasn’t very original here, offering images that are related to Ancient Egypt, with the modern touch being brought by the British professor that has come to study the pyramids, along with his assistant.

A game that gets 5x4 reels, Hidden manages to put in front of players 178 connected paylines. It also has Treasure Room Free Spins, Flashback Respins with Sticky Wild Reels, plus regular wilds. In terms of payouts, it appears to be getting a top paying combo of $1,000.

Betting and Prizes

For a game like this, the wager often ends up at a maximum value of $100, at least for the titles coming from ELK Studios. The smallest value of the wager can be set to $0.20. Most games offered by them will have betting strategies implemented, which allow the game to set the wager value, based on the way your luck has been acting lately. It’s an optional thing though, and you can ignore those settings if you don’t want them.

The top reward, which is offered via a combo of five Professor icons, will get you paid $1,000 while you’re using the top wager of $100. The features appear to be good enough to make up for the relatively low payouts, and so you still get an average RTP of 96.30% out of it.

Hidden Slot Features

Once we move on to the features, the first one you should probably learn about will be the Wild symbol, which will be a substitute for any symbols that are able to use it in forming new combinations. The magnifying glass is the only symbol that the wild can’t replace.

Between your regular spins, you will sometimes find that you can trigger Flashback Respins. These will cover up to three from the middle reels with sticky wilds, which will remain there for the next three rounds.

The other major feature that the game makes possible is called Treasure Room Free Spins. You start by getting 5 free spins and a random symbol that will be turned into an expanding version, one which can occupy 2x2 positions when it appears. The direction of the expansion for that symbol is clockwise. You can get additional free games by landing magnifying glass symbols, each one adding one round to your total. Once the winning lines have paid out, you will find that non-expanding symbols will explode, so that a second symbol drop can occur. You get paid by any winning combinations that might form at this point, after which you can move on to the next free spin.

Theme & Design

In terms of design, you are looking at a typical Ancient Egypt themed slot machine, at least based on the graphics that were used in it. You have high quality images inside, from the pyramids that are visible in the background image, to the symbols which are ranging from the card logos that are placed on walls filled with hyeroglyphs, to the images of camels, the Sphinx, the assistant or the professor.


I enjoyed Hidden, but it’s mostly because of the quality of the design and the uniqueness of some of its features. It’s a very common topic to be using in a slot machine though, and it doesn’t get a lot of points for that.