Dolphin's Island Slot – 96.56% RTP, Rules & Features

Quick answer

Dolphin's Island is a iSoftBet slot (2015) with 96.56% RTP. It uses 243 ways with free spins and wild symbols. RTP can vary by casino.

Key specs

RTP: 96.56%
Grid: 5×3
Pays: 243 ways
Released: 26 February 2015
Bet range: $0.25–$12.50
Jackpot: None

Not published by the provider: volatility, max win

Top-rated casinos (check the game is available)

We haven't confirmed which partner carries this game.

Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonus
Get 200 spins + 100% at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
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.
Velmora150 No-Wager Free Spins Keep every winNo wagering
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18+. New customers. Min dep $20. No wagering. 7 days. 150 spins on Big Bass Bonanza at $0.10. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. No wagering on winnings. Free spins on Big Bass Bonanza at $0.10 per spin. Offer valid 7 days. Full T&Cs apply. Please gamble responsibly.
Kronos Royale200% up to $2,000 + 10% weekly cashback40x bonus
Get 200% bonus at Kronos Royale (opens in new tab)
18+. New customers. Min dep $50. 40x bonus wagering. Max bet $10. 60 days. Full T&Cs apply.
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.

What does an hour cost?

Themes:

Fishing & ocean

Member access — full guide unlocked

How to play Dolphin's Island (members only)

Instead of fixed lines, matching symbols on adjacent reels pay in any position, starting from the leftmost reel. The more matching symbols there are on each reel, the more ways the combination pays.

Dolphin's Island is played on a 5×3 grid with 243 ways.

Set your stake. Choose your total bet per spin between $0.25 and $12.50. 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.
Trigger the bonus. Land the required scatter symbols to start the free spins feature.

The full Dolphin's Island guide: how winnings work, 2 features and 2 strategy tips

What 96.56% RTP costs per $100 wagered: $3.44 on average
2 features explained: free spins, wild symbols
Strategy tips for Dolphin's Island

Free · no card · 18+ only

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How winnings work (members only)

What 96.56% RTP costs per $100 wagered

What 96.56% RTP means

Expected return = stake × 96.56%
Over $100 of total bets, the long-run average loss is $3.44

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

Features explained (members only)

2 features explained: free spins, wild symbols

Free spins

A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.

Wild symbols

Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.

Strategy tips (members only)

Bonus wagering: at 96.56% RTP, clearing $1,000 of wagering costs about $34.40 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.

1 more tip

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.

Questions