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Slot · 3 Oaks Gaming

Rio Gems

Rio Gems (3 Oaks Gaming): 5x3 slot with 25 lines, Hold & Win Bonus, Super Bonus Game, Free Spins, Mystery Symbols and Royal Jackpot x10,000.

Jackpot
Released
2022
Rio Gems, game preview
Demo, no real money · 18+

Rio Gems is a slot by 3 Oaks Gaming. The matrix classified it under Pragmatic Play, but the official 3 Oaks page and API confirm the title, the provider, and a release in Dec 2022.

The game sets a Rio carnival on a 5x3 grid with 25 paylines. The core of the official sheet revolves around three ideas: Hold & Win Bonus, Super Bonus Game, and Free Spins. It is therefore a sheet focused on gem collection, fixed jackpots, and bonus symbols.



Rio Gems - capture officielle 3 Oaks Gaming

What 3 Oaks Confirms

Six blue or green Bonus gems trigger the Hold & Win Bonus. The round begins with three respins, and then each new Bonus symbol resets the pressure on the grid. The Mystery Symbol can reveal a jackpot or a Super Bonus Symbol, which gives the bonus its true momentum.

Criteria

Verified Information

Provider

3 Oaks Gaming

Release Date

Dec 2022

Format

5x3

Paylines

25

RTP

Not disclosed in the official public API

Volatility

Not officially disclosed

Main Bonus

Hold & Win Bonus

Listed Features

Super Bonus Game, Free Spins, Mystery Symbols, Mini/Minor/Major/Grand jackpots

Official Potential

Royal Jackpot x10,000 if all 15 positions are filled

Hold & Win and Super Bonus Game

During Hold & Win, the Bonus symbols remain on the grid, and the round is played around new gems falling. The Super Bonus Game starts with five blue or green Bonus gems and one white Super Symbol gem, then it improves the value of the Bonus Symbols that appear during the feature.

The jackpots listed by 3 Oaks are Mini, Minor, Major, and Grand. If all 15 positions are filled, the Royal Jackpot is announced at x10,000 the bet. This is the official maximum value usable for this sheet.



Rio Gems - visuel officiel 3 Oaks Gaming

Mystery Symbols and Free Spins

The Mystery Symbol serves as a point of controlled uncertainty: it can reveal one of the jackpots or a Super Bonus Symbol. If a Super Symbol appears during the Hold & Win Bonus, it immediately triggers the Super Bonus Game.

The Free Spins close the loop with only the highest-paying symbols in play. The official source does not provide all the payout figures, but it clearly shows the role of the bonuses and jackpots.



Rio Gems - bonus officiel 3 Oaks Gaming

Point of Attention

The public sheet from 3 Oaks does not publish an RTP, volatility, min/max bet, or exploitable hit frequency for this page. These values are therefore not invented here. Before playing for real money, always check the information screen displayed by the operator.

Another important point: the game source code of the matrix is kept in the CMS for the demo, but it must not be copied into a public report or shared with its technical parameters.

Our Quick Review

Rio Gems is mainly aimed at players who enjoy Hold & Win games with counters, bonus symbols, and fixed jackpots. The official source provides enough material to understand the game, but not enough to judge its payout rate without the casino's help screen.

To stay with 3 Oaks, compare it with Sunlight Princess and Tiger Gems. The slot machines page, the best online casinos, and the online casinos France then allow you to place the game in a broader selection.

Rio Gems FAQ

Who created Rio Gems?

Rio Gems is a 3 Oaks Gaming slot machine. The official API confirms a Dec 2022 release, a 5x3 grid, 25 lines, Hold & Win Bonus, Super Bonus Game, and Free Spins.

What is the RTP of Rio Gems?

The public 3 Oaks datasheet consulted does not publish an exploitable RTP for this game. You must check the casino's information screen before playing.

What is the Rio Gems bonus?

Six blue or green Bonus gems trigger the Hold & Win Bonus with three respins. The Mystery Symbol can reveal a jackpot or a Super Bonus Symbol, and filling the entire grid can trigger the Royal Jackpot x10,000.

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