Bubbles Slot – 96.15% RTP, Rules & Features

Quick answer

Bubbles is a Novomatic (Greentube) slot (2015) with 96.15% RTP and low–medium volatility. It uses 10 paylines. RTP can vary by casino.

Key specs

RTP: 96.15%
Volatility: Low–medium
Pays: 10 paylines
Released: 3 June 2015

Not published by the provider: max win, grid, bet range, jackpot

Top-rated casinos (check the game is available)

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Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
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Key terms
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Key terms
18+. New customers only. Min deposit $50. 40x bonus wagering requirement. Max bet $10 while wagering. Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week. Offer valid 60 days. Full T&Cs apply. Please gamble responsibly.

Game availability varies by casino and country.

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How to play Bubbles (members only)

Wins are paid when matching symbols land on an active payline, usually left to right starting from the leftmost reel. Your total stake is spread across the lines, and each line win is the line bet multiplied by the symbol's paytable value.

Bubbles pays with 10 paylines.

Set your stake. Choose your total bet per spin. Wins are paid as multiples of this stake.
Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.

The full Bubbles guide: how winnings work and 3 strategy tips

Your stake plan: a $50 budget → about $0.33 a spin (low–medium volatility)
What 96.15% RTP costs per $100 wagered: $3.85 on average
Stake plans for $20 to $250 budgets, checked against the $0.40 minimum bet
4 slots with the same style and a higher RTP (up to 98%)
Strategy tips and a session planner for Bubbles

Free · no card · 18+ only

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How winnings work (members only)

What 96.15% RTP costs per $100 wagered

What 96.15% RTP means

Expected return = stake × 96.15%
Over $100 of total bets, the long-run average loss is $3.85

RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a low–medium volatility game.

Features explained (members only)

What the info screen lists

No special features are listed for this game in the sources we checked. Check the in-game info screen for details.

Strategy tips (members only)

Size your stake to the volatility. Low-to-medium volatility gives fairly regular hits with occasional bigger features. It is a balanced choice for steady play and bonus wagering. A simple rule: bring at least 150 spins' worth of budget, so a $50 budget suggests a stake of about $0.33.

2 more tips and a session planner

Bonus wagering: at 96.15% RTP, clearing $1,000 of wagering costs about $38.50 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.

More on this in slot RTP and volatility explained and bankroll management.

Does it fit your budget? (members only)

Stake plans for $20 to $250 budgets, checked against the $0.40 minimum bet

For low–medium volatility we suggest a budget of at least 150 spins. This is what that means for Bubbles.

Stake plans for Bubbles
Budget	Stake a spin	Bet range	Average cost of 150 spins
$20	$0.13	Below the $0.40 minimum bet	$0.77
$50	$0.33	Below the $0.40 minimum bet	$1.92
$100	$0.67	Fits	$3.85
$250	$1.67	Fits	$9.62

Averages only: a short session can end far above or below them. Set a loss limit before you play.

Same style, better RTP (members only)

4 slots with the same style and a higher RTP (up to 98%)

Slots with the same mechanic (paylines) and volatility (low–medium) as Bubbles, with a higher published RTP. Casinos can still run lower versions of any of them.

TLThe Legend of Big Foot98% RTP · +1.85 pts