Game Information
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Provider
Greentube
Type
Slots
Release Date
October 5, 2017
Reels
5
RTP
95
Volatility
4
Max Exposure
208000
Min Bet
0.02
Max Bet
5
Max Win per Spin
12500
Rainbow King Slot: Comprehensive Data Analysis
Core Game Specifications
| Attribute | Value |
|---|---|
| Developer | Novomatic (Greentube) |
| Release Date | December 14, 2011 |
| Theme | Fantasy, Royalty, Castle, Rainbow |
| Layout | 5 reels, 20 paylines |
| Paylines | 20 |
| Bet Range | 0.40 to 100 (coins per spin) |
| Core Mechanics | Cash Castle bonus pick feature, King Cash pick feature, Rainbow King board game bonus with Reel King Spins |
| Software Provider | Novomatic (Greentube) |
| Technology | Flash, JS, HTML5 |
Mathematical & Payout Model
Return to Player (RTP)
95%
Volatility
Low
Max Win Potential
12500x
Symbols & Paytable Hierarchy
| Tier | Symbol(s) | Function & Value |
|---|---|---|
| Low Tier | 10, J, Q | Provides small, frequent wins to maintain gameplay. |
| Mid Tier | A, K | Thematic items offering moderate payouts. |
| High Tier | Wild (coloured brooch), Bag of gold, Rainbow King symbol | Highest paying symbols. Top hits available with full combinations. |
| Wild | Coloured brooch wild | Acts as a substitute / feature trigger per game rules. |
Rainbow King Bonus Features Mechanics
| Feature | Trigger | Initial Award | Core Mechanic | Enhancement/Retrigger |
|---|---|---|---|---|
| Cash Castle | Three or more castle symbols | Pick one of displayed castles to reveal cash prize | Prize ranges from 2x to 500x total bet | |
| King Cash | Three or more crown symbols | Pick one crown to reveal cash prize | Prize ranges from 50x to 500x total bet | |
| Rainbow King | Three or more King symbols | Roll dice to move crown around board collecting prizes; landing on ‘take the money’ triggers Reel King Spins | Reel King Spins can award up to 25,000 coins (equivalent to part of max win) |
Frequently Asked Questions (FAQ)
| What is the RTP of Rainbow King? | The RTP is 95%. |
| How volatile is the game? | The game has low volatility. |
| What is the maximum win multiplier? | The maximum win multiplier is 12500x the bet. |
| How many paylines does the game have? | The game has 20 paylines. |
| What bonus features are available? | The game includes Cash Castle, King Cash and Rainbow King bonus features. |
Rainbow King Performance Summary: Strengths vs. Weaknesses
Strengths
- Multiple engaging bonus features
- Low volatility suits frequent small wins
- High maximum win potential
Weaknesses
- RTP is below industry average
- Hit frequency not specified
- Theme is dated
Overview
Rainbow King is a fantasy‑themed slot by Novomatic (Greentube) featuring a 5‑reel, 20‑payline layout. It offers low volatility, an RTP of 95%, and three bonus features: Cash Castle, King Cash, and Rainbow King with Reel King Spins.
Rachel Pine is our slots expert who has worked in the online gambling industry for 10+ years. Over the course of her career, Rachel has reviewed more than 30,000 slots.
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