Quick answer
Gem Machine is a Light & Wonder slot (2018) with 97% RTP. It has free spins. RTP can vary by casino.
On this page7 sections
Key specs
- RTP
- 97%
- 0.96 points above the median (96.04%)
- Grid
- 5×3
- Released
- 19 Sep 2018
Not published by the provider: volatility, max win, bet range, jackpot
Top-rated casinos (check the game is available)
We haven't confirmed which partner carries this game.
Ad disclosure: we currently earn nothing from the brands listed; if that changes, each offer will say so. How we make money
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusGet 200 spins + 100% at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
Every significant term is in the line above.
Full T&Cs apply. Please gamble responsibly.
- Velmora150 No-Wager Free Spins Keep every winNo wageringClaim 150 no-wager spins at Velmora (opens in new tab)
18+. New customers. Min dep $20. No wagering. 7 days. 150 spins on Big Bass Bonanza at $0.10. Full T&Cs apply.
Key terms
Every significant term is in the line above.
Full T&Cs apply. Please gamble responsibly.
- Kronos Royale200% up to $2,000 + 10% weekly cashback40x bonusGet 200% bonus at Kronos Royale (opens in new tab)
18+. New customers. Min dep $50. 40x bonus wagering. Max bet $10. 60 days. Full T&Cs apply.
Key terms
- Cashback
- Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week.
Full T&Cs apply. Please gamble responsibly.
Game availability varies by casino and country.
Themes:
How to play Gem Machine (members only)
This game uses its own win-evaluation system. Check the in-game paytable for exactly how combinations are formed.
Gem Machine is played on a 5×3 grid.
- Set your stake. Choose your total bet per spin. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Trigger the bonus. Land the required scatter symbols to start the free spins feature.
The full Gem Machine guide: how winnings work, 1 feature and 2 strategy tips
- What 97% RTP costs per $100 wagered: $3.00 on average
- 1 feature explained: free spins
- Strategy tips for Gem Machine
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 97% RTP costs per $100 wagered
What 97% RTP means
Expected return = stake × 97%
Over $100 of total bets, the long-run average loss is $3.00
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a volatile game.
Features explained (members only)
1 feature explained: free spins
Free spins
A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.
Strategy tips (members only)
- Bonus wagering: at 97% RTP, clearing $1,000 of wagering costs about $30.00 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
1 more tip
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Questions
Frequently asked questions
Who makes Gem Machine?
Gem Machine is developed by Light & Wonder and was released in 2018.
What is the RTP of Gem Machine?
The default RTP of Gem Machine is 97%.
Can I play Gem Machine for free?
Not on GambGenius at the moment: we don't list an official Light & Wonder demo of Gem Machine.
Does Gem Machine have a bonus buy?
No bonus buy is listed for Gem Machine in the sources we checked.
Where this data comes from
- vegasslotsonline.com Slot database
Specs come from 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Dazzle Me96.91% RTP
Bonanza Falls96.52% RTP
Big Bass Bonanza96.71% RTP
The Dog House96.51% RTP
