Gem Rocks Slot – Yggdrasil

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gem rocks slot by yggdrasil

Overall impression

Graphics - 76%
Gameplay - 32%
Bonuses - 83%
Value - 68%
Game Information
Name:Gem Rocks
Progressive: No
Whats hot: Whats not so hot:
Cascading reelsNo free spins feature
Volatility relatively high up on the scale
Playable on mobile devices

Where to play?

In terms of its overall game mechanic, Gem Rocks a video slot powered by Yggdrasil Gaming is quite similar to the NetEnt Hit Gonzo’s Quest. It features cascading wins that is set in a world of stones and gems, up to 4×4 cluster symbols can occur. With 4,096 Ways to Win and 6 reels, the top non-progressive cash prize that can be won on a single spin is 2,500x your stake.

The smallest bet per spin is 25 pence up to £100, the online slots can be played on mobile phones and PC desktops (Apple Mac and Windows), free play is available too at our top UK online casinos. The visual side of the game looks pretty basic to us and we find it to be of medium to high variance. The backdrop of the reels is set against a mountainous terrain. On the reels you’ll see 8 different coloured stones/gems. If you hit a winning combination symbols will disappear with new symbols dropping down which gives you another shot at forming a winning combination.

The symbol that offers the top payout is the Red Star, land 6 of them at the maximum wager per spin you’ll pocket 200 coins. Then there’s the Gem Rock bonus feature which is made of identical symbols that awards 2, 5 and 9 consecutive dropdown wins. Basically as long as you keep on hitting winning combinations the symbols will keep on coming.

The RTP or average return to player percentage of Gem Rocks is 96.2%. We experienced up to 8 dry spins during the ‘Free Play’ version at an average bet of £1.50 per spin.

gem rocks slot by yggdrasil


Game Play

The coin value is 0.002 up to 1.00, if the value is set at 0.002 your average wager per spin will be £0.10 and if it is 1.00 you’ll bet £50 per spin. High rollers can use the Max Bet button and there’s an Auto Play feature that spins the reels 10 to 100 times automatically for you.


Bonus Modes

Gem Rock Feature

The rock star of the bonus games is the Gem Rock feature, it is triggered when you hit 2, 5 and 9 consecutive Dropdown wins. To the right of your screen is the Gemrock Meter which helps you to keep track of your progress. Once the feature is played a Gem Rock pitches at the top of the reels, it’s made up of identical symbols. If you get consecutive wins, the Gem Rock will be huge. It works like this:

When you have 2 wins in a row the size of the Gem Rock will be 2×2.
Have 5 wins in quick succession the Gem Rock will be 3×3.
If you’re lucky enough to hit 9 wins in a row the Gem Rock will be a whopping 4×4, in other words…HUGH!

The Gem Rocks will contain the same symbol, in hindsight it allows players to form winning combinations almost at will. The aim of the slots is to get 9 consecutive wins along or the big 4×4 Gem Rock. The big wins occur when you hit a bunch of wins in a row with the 4×4 Gem Rock.



Gem Rocks is not the most entertaining slots we played, it takes a few spins to get used to it. With a cascading reels and one bonus feature the potential for big wins is really good, brace yourself for loads of dry spins. If you’re looking for an Yggdrasil slots with more firepower we highly recommend Viking’s Go Bezerk.

Where To Play

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