Here2Win Casino · Greentube · Australia
Rainbow King card on Pokies Vault
Australian punters can open the session page for Rainbow King pokie apart from this catalogue.
Greentube released Rainbow King as a medium-to-high volatility pokie, and Pokies Vault files it for Here2Win Casino players in Australia. Published return is 95.00%. Punters in Adelaide still see ordinary short-run swings.
More from Greentube
How this pokie compares
| Title | Studio | Published RTP | RTP delta | Volatility | Grid |
|---|---|---|---|---|---|
| Rainbow King (this card) | Greentube | 95.00% | — | medium-to-high | 5×3 / 5×4 HTML5 video grid |
| Jingle Jackpot · Highest RTP in Greentube | Greentube | 96.45% | +1.45% | medium | 5×3 / 5×4 HTML5 video grid |
| Book of Bonanza · Same mechanic (Expanding Symbols) | SmartSoft | 97.60% | +2.60% | medium-to-high | 5×3 classic video grid |
Explore head-to-head comparisons → · Session bankroll calculator →
At Here2Win Casino
Here2Win Casino is the casino on this card. Beside Rainbow King the provider page lists 419 other Greentube pokies, all played at Here2Win Casino.
Published figures & technical specs
- Studio
- Greentube (419 in this catalogue)
- Published RTP
- 95.00%
- RTP band
- under 96%
- Volatility
- medium-to-high
- Features
- Expanding Symbols and Gamble Feature
- House edge
- 5.00%
- Vs studio avg RTP
- -0.05% vs 95.05% avg (#88/135)
- Reel grid
- 5×3 / 5×4 HTML5 video grid
- Pay structure
- Standard studio payline / ways structure
- RNG testing labs
- GLI, eCOGRA, TÜV Austria
- Studio licences
- MGA, UKGC, AGCO (Ontario), ADM, DGOJ, GGL
- Platform
- HTML5 (Desktop, iOS & Android)
- Play at
- Here2Win Casino
- Stake
- A$
- Card updated
- 2026-10-29
Session math & RTP benchmark
At a published RTP of 95.00%, the theoretical house edge on Rainbow King is 5.00% over a long-run sample. Across 135 RTP-published Greentube titles in this catalogue, the studio average is 95.05%, placing Rainbow King at -0.05 percentage points (rank #88 of 135). Against the wider catalogue average of 95.80%, the delta is -0.80%. When sizing a session at Here2Win Casino in A$, keeping 200x–250x the unit stake covers normal variance swings.
| Session volume | Total turnover | Theoretical return | House margin | Est. winning spins |
|---|---|---|---|---|
| 100 spins (A$1/spin) | A$100 | A$95.00 | A$5.00 | ~27–33 |
| 250 spins (A$1/spin) | A$250 | A$237.50 | A$12.50 | ~68–83 |
| 500 spins (A$1/spin) | A$500 | A$475.00 | A$25.00 | ~135–165 |
Pros and cons
Pros
- The studio is named: Greentube.
- Stake for Australian punters is in A$ at Here2Win Casino.
- The page keeps the studio figure 95.00% and does not round it.
- You can see the medium-to-high volatility pace before you stake.
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.
- Hit rate is not published here.
The studio behind it
If you only needed the maker, it is Greentube. Pokies Vault does not swap the studio for a local name. The provider page is the clean list.
Studio certification & mechanics
Greentube (Novomatic AG Group) is an iGaming studio founded in 1998 and headquartered in Vienna, Austria. Its random number generators (RNG) and math models are audited by GLI, eCOGRA, TÜV Austria and certified across MGA, UKGC, AGCO (Ontario), ADM, DGOJ, GGL. Studio RTP policy: Standardised theoretical RTP profiles (~95.00%–95.50% classic mathematical model).
In the Pokies Vault catalogue, Greentube accounts for 419 pokies, playable at Here2Win Casino. Across the 135 titles with a published return, the studio averages 95.05% RTP (spanning 92.13% to 96.45%, with 0 pokies at 96.5% or above). Signature studio mechanics include Book-style Expanding Scatter, Lock & Spin, Twin Spinner, Gamble Ladder.
Technical layout for Rainbow King: 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.
Expanding Symbols: Expanding symbol mechanics select one or more pay symbols that stretch vertically to cover the full reel when enough instances land.
Gamble Feature: The Gamble feature offers an optional post-win double-up or risk ladder round after standard base-game payouts.
What this pokie is
Pokies Vault files Rainbow King as a record: studio Greentube, then the numbers the card actually has, then the door to Here2Win Casino. Guessing would break the point of the page.
The preview under the title is the short form of this card. A search snippet should match the page. Pokies Vault does not decorate the preview with a guessed return.
Australian English on this host is deliberate: pokie, punter, A$. This page does not borrow their sentences. The casino on the button is still Here2Win Casino.
The Greentube page also names Cherry Surprise.
How you open it
- Open Rainbow King from the play button. The click stays on pokiesvault.com, then Here2Win Casino loads the pokie.
- Set the stake in A$ before the reels move. A smaller stake just makes a medium-to-high volatility pokie last longer.
- Stop on a clock you set in Adelaide, not when the pokie 'looks due'.
Questions
Can I play Rainbow King at Here2Win Casino from Australia?
Yes. Pokies Vault links Rainbow King to Here2Win Casino for Australian players. The button on this page stays on pokiesvault.com and then opens the pokie at Here2Win Casino.
What return does Rainbow King publish?
The published RTP of Rainbow King is 95.00%. That is a long-run studio figure. A single session in Adelaide can finish far from it.
Is Rainbow King a high variance pokie?
Rainbow King is marked medium-to-high volatility. On a medium-to-high volatility pokie the balance usually moves in lumps, so the stake in A$ matters more than the theme.
Which studio built Rainbow King?
The provider is Greentube. Other Greentube 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 Rainbow King 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$.
Is Rainbow King staked in A$?
You choose the A$ stake after Here2Win Casino loads Rainbow King. This catalogue page never takes the money.
Can I try Rainbow King here without an account?
This page is the written card. It does not run the reels, free or paid. Play happens at Here2Win Casino.
Does Pokies Vault score Rainbow King?
No score is printed on purpose. A star would be a house opinion. The page sticks to the studio, the published RTP when the card has one, and the volatility label.
Does Rainbow King remember my last session?
No. Rainbow King does not store the night you had in Adelaide, and it is not due. A published RTP describes a very long run of spins, not the next one.
How old do I have to be to play Rainbow King?
The page is written for adults in Australia. Gambling can harm. Stop when the session stops being a choice.
Where does the click on Rainbow King go?
Pokies Vault records the page you were on and sends you to Here2Win Casino with Australia already on the trail.
How many Greentube 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.
Does it matter that I am in Adelaide?
No. Adelaide is named because readers are there. It is not a setting inside Rainbow King, and it does not change the RTP.
Does this page list a welcome offer?
Pokies Vault will not print a match amount or a spin count for Rainbow King. Those terms belong to the casino, and they change.
Is this the same machine I would find in a club?
The page describes the online title from Greentube. It does not claim a venue in Adelaide.
How do I stop a session on Rainbow King?
A normal stop is the one you decided in advance. Do not wait for the pokie to look due.
What is the pros and cons block on Rainbow King?
The block is a reading aid for Rainbow King, not a rating. Pros are facts on the card or about the catalogue. Cons are the gaps and the limits, including that this page is not the cashier.
What should I read before I open Rainbow King?
The preview is the same card, shortened. It is not a tip and it does not know how your session in Adelaide will finish.
Will a shorter name still open Rainbow King?
This page is only Rainbow King. The play button follows that name, not a shorter guess.
What is the maximum win on Rainbow King?
The card does not publish a maximum win, a reel count, or a payline count. Pokies Vault does not guess them.
Which feature labels are on Rainbow King?
Expanding Symbols and Gamble Feature is the whole feature list for Rainbow King. A label is not a price and not a description of the round.
How a session behaves
Use the figures first and the mood never. Rainbow King at Here2Win Casino is still only a session with an A$ stake.
A fair session on Rainbow King is a run of spins you can afford to lose, not a plan to clear a welcome offer. Any match lives inside the Here2Win Casino account.
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
A medium-to-high volatility pokie sits in the middle of the pack for pace. Rainbow King is an ordinary session game at Here2Win Casino, not a system.
Filed under
Features Expanding Symbols Gamble Feature
Playing this pokie
Open the full name Rainbow King in the Here2Win Casino lobby. A shorter search can load a different Greentube 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$. pokiesvault.com does not host the reels.
Feature labels on this card: Expanding Symbols and Gamble Feature. Pokies Vault does not add a jackpot figure or a bonus amount on top of those names.