Here2Win Casino · Yggdrasil Gaming · Australia
The Pokies Vault page for Gemstone Jam
Australian punters can open the session page for Gemstone Jam pokie apart from this catalogue.
On Pokies Vault, Gemstone Jam is the Yggdrasil Gaming pokie Australian players launch through Here2Win Casino. The studio name and the game name are the hard facts on this page. A catalogue page is not a tip.
More from Yggdrasil Gaming
How this pokie compares
| Title | Studio | Published RTP | RTP delta | Volatility | Grid |
|---|---|---|---|---|---|
| Gemstone Jam (this card) | Yggdrasil Gaming | — | — | — | 5×3 / 5×4 HTML5 video grid |
| Max Elements · Highest RTP in Yggdrasil Gaming | Yggdrasil Gaming | 96.00% | — | high | 5×3 / 5×4 HTML5 video grid |
Explore head-to-head comparisons → · Session bankroll calculator →
At Here2Win Casino
Gemstone Jam is a Yggdrasil Gaming pokie at Here2Win Casino. Pokies Vault keeps the Australian figures for it: studio, RTP when the card has one, and volatility. The button opens the game at Here2Win Casino.
Yggdrasil Gaming also has Champions of Rome on this list, with Arthur's Fortune further along.
Published figures & technical specs
- Studio
- Yggdrasil Gaming (166 in this catalogue)
- Studio average RTP
- 95.11% (across 9 titles)
- Reel grid
- 5×3 / 5×4 HTML5 video grid
- Pay structure
- Standard studio payline / ways structure
- RNG testing labs
- Independent RNG & math verification (GLI / iTech Labs / BMM Testlabs standards)
- Studio licences
- Certified RNG for regulated international casino markets
- Platform
- HTML5 (Desktop, iOS & Android)
- Play at
- Here2Win Casino
- Stake
- A$
- Card updated
- 2026-10-29
Session math & RTP benchmark
Gemstone Jam does not carry an individual published RTP on its source sheet, so no single-title percentage is guessed. Across the 9 Yggdrasil Gaming titles that do publish a return in this catalogue, the studio average is 95.11% (ranging from 94.00% to 96.00%). For a balanced session at Here2Win Casino, a bankroll buffer of 250x–350x the A$ unit stake suits this pokie's profile.
| Session volume | Total turnover | Theoretical return | House margin | Est. winning spins |
|---|---|---|---|---|
| 100 spins (A$1/spin) | A$100 | A$95.11 | A$4.89 | ~21–26 |
| 250 spins (A$1/spin) | A$250 | A$237.78 | A$12.23 | ~53–65 |
| 500 spins (A$1/spin) | A$500 | A$475.55 | A$24.45 | ~105–130 |
Pros and cons
Pros
- The studio is named: Yggdrasil Gaming.
- Stake for Australian punters is in A$ at Here2Win Casino.
- Yggdrasil Gaming has 166 pokies in this catalogue.
Cons
- This page is a catalogue. It does not hold an A$ balance.
- No bonus figure is printed. Any offer sits inside Here2Win Casino and can change.
- The return gap is left empty on purpose.
- Volatility is not on the source card.
The studio behind it
Yggdrasil Gaming is the studio printed on Gemstone Jam. Pokies Vault lists 166 of their pokies for Australia, and this is one of them. Open that page if you want a neighbour title from the same studio.
Studio certification & mechanics
Yggdrasil Gaming (Yggdrasil Gaming Studio) is an iGaming studio headquartered in International iGaming Studio. Its random number generators (RNG) and math models are audited by Independent RNG & math verification (GLI / iTech Labs / BMM Testlabs standards) and certified across Certified RNG for regulated international casino markets. Studio RTP policy: Published per-title theoretical RTP where provided on the studio sheet.
In the Pokies Vault catalogue, Yggdrasil Gaming accounts for 166 pokies, playable at Here2Win Casino. Across the 9 titles with a published return, the studio averages 95.11% RTP (spanning 94.00% to 96.00%, with 0 pokies at 96.5% or above). Signature studio mechanics include HTML5 video slot math, mobile-first reel layouts, and bonus feature triggers.
Technical layout for Gemstone Jam: 5×3 / 5×4 HTML5 video grid paired with Standard studio payline / ways structure, running natively in HTML5 across desktop, iOS, and Android browsers at Here2Win Casino.
What this pokie is
Pokies Vault files Gemstone Jam as a record: studio Yggdrasil Gaming, then the numbers the card actually has, then the door to Here2Win Casino. Guessing would break the point of the page.
Before the first spin, use the fact list and the pros and cons. Neither one adds a star rating. Gemstone Jam is the Yggdrasil Gaming pokie, and the reels run at Here2Win Casino.
Yggdrasil Gaming is the studio on the Gemstone Jam card. That is the fact worth trusting on this page. The volatility label reads. Walk away on your own clock.
How you open it
- Open Gemstone Jam from the play button. The click stays on pokiesvault.com, then Here2Win Casino loads the pokie.
- Set the stake in A$ before the reels move. A smaller stake just makes a pokie last longer.
- Stop on a clock you set in Brisbane, not when the pokie 'looks due'.
Questions
Does Here2Win Casino list Gemstone Jam for Australian punters?
Yes. Pokies Vault links Gemstone Jam to Here2Win Casino for Australian players. The button on this page stays on pokiesvault.com and then opens the pokie at Here2Win Casino.
Which studio built Gemstone Jam?
The provider is Yggdrasil Gaming. Other Yggdrasil Gaming pokies on Pokies Vault sit on the same provider page if you want a neighbour title.
Is this page the casino, or a catalogue?
Pokies Vault is a catalogue. The stake in A$ is placed at Here2Win Casino after you follow the play button. This page does not hold a balance.
Can I open Gemstone Jam on a phone?
Yes. The play button on pokiesvault.com is the same on a phone as on a desktop. The session then runs at Here2Win Casino, and the stake is still in A$.
What currency is the stake on Gemstone Jam?
You choose the A$ stake after Here2Win Casino loads Gemstone Jam. This catalogue page never takes the money.
Can I try Gemstone Jam here without an account?
No. Pokies Vault does not embed a demo of Gemstone Jam. The button opens the pokie at Here2Win Casino. Any practice mode, if one exists, is inside that account, not on pokiesvault.com.
Why is there no star rating for Gemstone Jam?
Gemstone Jam is not ranked against other pokies on Pokies Vault. Use the figures on the card, not a badge.
Can Gemstone Jam be due for a win?
No. Gemstone Jam does not store the night you had in Brisbane, and it is not due. A published RTP describes a very long run of spins, not the next one.
Is Gemstone Jam an 18+ game?
18+. Pokies Vault is a catalogue, and Here2Win Casino is where the session runs. Do not open the pokie if you are under 18.
What does the play button actually do?
Pokies Vault records the page you were on and sends you to Here2Win Casino with Australia already on the trail.
How many Yggdrasil Gaming pokies are in this catalogue?
Use the provider link under the title. That list is the same studio, not a random mix, and each title opens at Here2Win Casino.
Is Gemstone Jam different in another Australian city?
No. Brisbane is named because readers are there. It is not a setting inside Gemstone Jam, and it does not change the RTP.
Will I see a bonus figure for Gemstone Jam here?
No figure is invented here. If Here2Win Casino shows a welcome offer, it shows it inside the account, with its own terms. Read them there before you opt in.
Is Gemstone Jam a club or pub pokie?
The page describes the online title from Yggdrasil Gaming. It does not claim a venue in Brisbane.
When should I close Gemstone Jam?
A normal stop is the one you decided in advance. Do not wait for the pokie to look due.
Why is there no RTP for Gemstone Jam?
No estimate is offered. An invented RTP would make the catalogue worse. The studio is still Yggdrasil Gaming, and play is still at Here2Win Casino.
Why does Gemstone Jam have a pros and cons list?
It splits what the card publishes from what Pokies Vault refuses to invent. A printed RTP is listed because it is a source figure. A missing hit rate is named as a limit, not filled in.
What should I read before I open Gemstone Jam?
Start with the short answer under the title, then the fact list. Both should agree: studio Yggdrasil Gaming, and RTP only when the card has one. The pros and cons repeat that split in plain lines.
How do I open the right Gemstone Jam?
This page is only Gemstone Jam. The play button follows that name, not a shorter guess.
How many reels and paylines does Gemstone Jam have?
A count of free spins and a bonus-buy price are also absent. Those numbers stay off the page.
Why does Gemstone Jam have no feature list?
Nothing was tagged on Gemstone Jam. A bonus round, a buy price, and a jackpot figure stay unwritten.
How a session behaves
Use the figures first and the mood never. Gemstone Jam at Here2Win Casino is still only a session with an A$ stake.
The maths does not soften because the catalogue page is long. Walk away while the stake in A$ is still a choice.
Stake and the cashier
The vault does not store deposits. PayID and cards are a Here2Win Casino matter once pokiesvault.com has handed you over.
PayID, POLi and the usual cards are named because Australian punters ask about them. pokiesvault.com does not take the deposit. The button only hands the session across.
Who it suits
This card does not carry a volatility mark, so Pokies Vault does not guess who Gemstone Jam suits. The studio is Yggdrasil Gaming. The session still opens at Here2Win Casino.
Playing this pokie
Search the lobby for Gemstone Jam, the full title on this card. A shorter search can load a different Yggdrasil Gaming title.
The card does not publish a maximum win, a reel count, a payline count, a count of free spins, or a bonus-buy price. Pokies Vault leaves those fields empty.
Australian punters play this pokie in the browser at Here2Win Casino, stake in A$. No app is installed from Pokies Vault.
Pokies Vault found no feature tag on Gemstone Jam. Nothing is invented to fill that gap.