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Great Blue

🏢 Microgaming 🎰 5x3 Medium volatility 🎨 Ocean 2010

95.02%

Theoretical RTP

4.98%

House edge

5000x

Max win

Medium

Volatility

Overview

About Great Blue

Great Blue immerses players in a vibrant underwater world where swimming fish and coral reefs dance across the 5x3 grid. Microgaming’s 2010 release blends engaging ocean aesthetics with solid gameplay, offering a visually soothing experience that feels both nostalgic and timeless. The medium volatility strikes a balanced rhythm, making it suitable for players who enjoy steady action without excessive risk.

The game features standard mechanics with Wilds substituting for symbols and triggering Free Spins when three or more appear. Multipliers boost wins during the bonus round, potentially reaching a max win of 5000x your stake. With an RTP of 95.02%, this slot offers fair return expectations. You can enjoy the full demo version here for free, testing features without spending a dime.

Features

Game mechanics

Free SpinsMultipliersWilds

Provider	Microgaming
Reels / layout	5x3 · 20 lines
RTP	95.02%
Volatility	Medium
Max win	5000x
Theme	Ocean
Released	2010

Honest math

What the RTP actually means

RTP is a long-run theoretical average across millions of spins — not a promise for your session. At 95.02%, the built-in house edge is 4.98%. Use the estimator to see the expected theoretical cost of play — variance means real results swing far around it.

Bet per spin

Spins per hour

Hours

RTP

Total wagered—

Expected theoretical loss—

Expected loss = wagered × (1 − RTP/100). A model, not a prediction — you can lose far more or win on any given session. Set a budget with 55LL.

FAQ

Frequently asked about Great Blue

How do I play Great Blue for free?

Simply click the demo button on this page to launch the game instantly in your browser. No download or registration is required, allowing you to spin the reels freely.

What does the 95.02% RTP mean?

This Return to Player percentage indicates that, theoretically, the slot returns 95.02% of all wagered money to players over an extended period. It is a standard rate for Microgaming slots from this era.

Is the medium volatility suitable for my bankroll?

Medium volatility offers a balance between frequent small wins and occasional larger payouts. This makes it ideal for players who want extended playtime without the extreme risk of high-variance slots.

What is the maximum win possible?

The maximum win is capped at 5000x your total stake. This is achieved primarily through the Free Spins feature with active multipliers, offering significant payout potential during bonus rounds.