Gem Rocks slot

Gem Rocks is a gemstone-themed slot from Yggdrasil Gaming, released in 2018. It runs on 6 reels and 4 rows, and it uses ways to win. The listed RTP is 96.2%.

The hook is a cascade mechanic. Winning symbols disappear and new symbols drop into their place, which can build another win from the same spin. Consecutive cascade wins feed into the Gem Rocks feature, where giant gem symbols form on the grid.

There is no substitute icon and no scatter icon in this game, and no free spins round. The action stays in the base game, driven by cascades and the giant symbols they create. If you want to compare it with other Yggdrasil games on this site, our Yggdrasil Gaming provider page lists them.

For a sense of how the listed RTP sits against other releases, our high-RTP slots page groups titles by that figure. You can also browse the slot themes section, which groups games by theme.

The grid is 6 reels by 4 rows, and wins are counted across thousands of ways. When a win lands, the winning symbols disappear and new symbols drop in from above. If that drop creates another win, the cascade continues, and each consecutive cascade win pushes the Gem Rocks feature forward.

The Gem Rocks feature builds giant gem symbols out of consecutive cascade wins. Two wins give a 2×2 symbol, and five wins give a 3×3 symbol. Nine wins give a 4×4 symbol, and the giant symbols are made of identical gem symbols.

There is no wild and no scatter, so you will not see a symbol stand in for another or a trigger icon. There is also no free spins round. Everything the game does happens through the cascade and the giant symbol that follows a run of consecutive wins.

The red or burgundy star is the highest-paying regular symbol. The game also has eight colored gem symbols. If you want to see the paytable breakdown, open the Info or Paytable screen in the loaded game, since that screen shows the version your operator is running.

There is no progressive jackpot reported for this game. The video slots section of this site covers other releases in the same format if you want to see how cascades appear elsewhere.

Dropdown or cascade mechanic

Trigger: A winning combination lands on the reels

Winning symbols disappear and new symbols drop in, which can create another win from the same spin and keep the cascade going.

Gem Rocks feature

Trigger: Consecutive cascade wins build up during a spin

Two consecutive wins give a 2×2 giant gem, and five give a 3×3. At nine wins, a 4×4 appears. The giant symbol is made of identical gem symbols.

1. Open the free demo to try the game without spending.
2. Check the Info and Paytable screens for the version loaded.
3. Set your stake with the bet selector before you start.
4. Use the spin button for one spin at a time.
5. Use Autoplay if you do not want to press spin each time.
6. Watch for a win, since it triggers the cascade.
7. Count the consecutive cascade wins to see the giant gem grow.
8. Check the paytable if a symbol’s value is unclear.

The demo for Gem Rocks can be played on this page. It is free practice, so spins cost nothing. Demo results do not predict real-money results.

I would open the Info and Paytable screens first in the demo, since those screens show the RTP and paytable for the version you are loading.

The listed RTP for Gem Rocks is the figure shown in the technical table above. That figure comes from third-party review sites. Operators can run different RTP configurations of many slots, so the figure shown in the version loaded at your casino, in the Info or Paytable screen, is the one that counts.

If you see a different number in the loaded game, that is the version you are playing. The listed RTP is the figure to compare first when you open the paytable screen.

Yggdrasil Gaming is a slot studio whose games on this site include several well-known titles. Among them are Alchymedes, Baron Samedi and Champions of Rome. Gem Rocks is its gemstone cascade slot, reported by third-party review sites. The feature work in Gem Rocks happens inside the base game.

• Casinos.com – Gem Rocks
• AboutSlots – Gem Rocks
• Clash of Slots – Gem Rocks
• Gmblrs – Gem Rocks
• Slototimes – Gem Rocks
• Casinofy – Gem Rocks

18+ only, or the legal gambling age where you live if it is higher. Slots are games of chance and no strategy changes the RTP. Play within a budget you can afford to lose. Free, confidential help: Gambling Help Online (Australia) 1800 858 858, National Problem Gambling Helpline (US) 1-800-GAMBLER, ConnexOntario (Canada) 1-866-531-2600.