Joker Gems Slot – 96.3% RTP, Rules & Features

Quick answer

Joker Gems is a ELK Studios slot (2018) with 96.3% RTP and medium volatility. It uses cluster pays with respins. RTP can vary by casino.

Key specs

RTP: 96.3%
Volatility: Medium
Hit frequency: 16.5% (about 1 in 6.1 spins)
Grid: 5×5
Pays: Cluster pays
Released: 4 September 2018
Bet range: $0.20–$100

Not published by the provider: max win, jackpot

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We haven't confirmed which partner carries this game.

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Game availability varies by casino and country.

What does an hour cost?

Themes:

Gems & gold

Member access — full guide unlocked

How to play Joker Gems (members only)

Wins pay for groups of matching symbols that touch horizontally or vertically. Larger clusters pay more, and winning clusters usually disappear to make room for new symbols.

Joker Gems is played on a 5×5 grid with cluster pays.

Set your stake. Choose your total bet per spin between $0.20 and $100. 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.

The full Joker Gems guide: how winnings work, 2 features and 3 strategy tips

Your stake plan: a $50 budget → about $0.25 a spin (medium volatility)
What 96.3% RTP costs per $100 wagered: $3.70 on average
2 features explained: respins, cluster pays
Stake plans for $20 to $250 budgets, checked against the $0.20 minimum bet
4 slots with the same style and a higher RTP (up to 98%)
Strategy tips and a session planner for Joker Gems

Free · no card · 18+ only

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How winnings work (members only)

What 96.3% RTP costs per $100 wagered

Because wins don't depend on lines, every symbol in view can count towards a pay. The paytable lists how many matching symbols each tier needs.

What 96.3% RTP means

Expected return = stake × 96.3%
Over $100 of total bets, the long-run average loss is $3.70

RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a medium volatility game.

The published hit frequency is 16.5%, meaning roughly one spin in 6.1 returns something — though many of those wins are smaller than the stake.

Features explained (members only)

2 features explained: respins, cluster pays

Respins

Selected reels or the whole grid spin again without a new stake, usually triggered by a specific symbol combination or near-miss feature.

Cluster pays

Wins are formed by groups of matching symbols touching horizontally or vertically, rather than along lines.

Strategy tips (members only)

Size your stake to the volatility. Medium volatility balances hit rate and win size. Expect dry spells between features, but not extreme swings. A simple rule: bring at least 200 spins' worth of budget, so a $50 budget suggests a stake of about $0.25.

2 more tips and a session planner

Bonus wagering: at 96.3% RTP, clearing $1,000 of wagering costs about $37.00 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
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.

Does it fit your budget? (members only)

Stake plans for $20 to $250 budgets, checked against the $0.20 minimum bet

For medium volatility we suggest a budget of at least 200 spins. This is what that means for Joker Gems (bets from $0.20 up to a maximum bet of $100).

Stake plans for Joker Gems
Budget	Stake a spin	Bet range	Average cost of 200 spins
$20	$0.10	Below the $0.20 minimum bet	$0.74
$50	$0.25	Fits	$1.85
$100	$0.50	Fits	$3.70
$250	$1.25	Fits	$9.25

Averages only: a short session can end far above or below them. Set a loss limit before you play.

Same style, better RTP (members only)

4 slots with the same style and a higher RTP (up to 98%)

Slots with the same mechanic (cluster pays) and volatility (medium) as Joker Gems, with a higher published RTP. Casinos can still run lower versions of any of them.

Fly!98% RTP · +1.7 pts

Le Vampire97.57% RTP · +1.27 pts

Monster Pop97.07% RTP · +0.77 pts

Gears of Time96.98% RTP · +0.68 pts

Questions

Frequently asked questions

Who makes Joker Gems?

Joker Gems is developed by ELK Studios and was released in 2018.

What is the RTP of Joker Gems?

The default RTP of Joker Gems is 96.3%.

Is Joker Gems high volatility?

Joker Gems is rated medium volatility. Medium volatility balances hit rate and win size.

Can I play Joker Gems for free?

Not on GambGenius at the moment: we don't list an official ELK Studios demo of Joker Gems.

Does Joker Gems have a bonus buy?

No bonus buy is listed for Joker Gems in the sources we checked.

Where this data comes from

elk-studios.com Provider
s3-eu-west-1.amazonaws.com Other source
slotcatalog.com Slot database

Specs come from the provider's own site, 1 independent slot database and other published sources. Casinos can run lower-RTP versions, so always check the game rules before you play.