Treasure Island Bet value calculator
Pick a Treasure Island bet and a stake to see the payout, the win chance, the expected return and the house edge, and compare every bet on the table.
| Bet | Pays | Win % | RTP | Edge | Exp. loss / 10 |
|---|---|---|---|---|---|
| Number 5 | 5:1 | 14.81% | 88.89% | 11.11% | 1.11 |
| Number 2 | 2:1 | 27.78% | 83.33% | 16.67% | 1.67 |
| Number 10 | 10:1 | 7.41% | 81.48% | 18.52% | 1.85 |
| Number 1 | 1:1 | 33.33% | 66.67% | 33.33% | 3.33 |
| John Silver's Loot | multiplier | 7.41% | n/a | n/a | n/a |
| Billy Bones' Map | multiplier | 3.70% | n/a | n/a | n/a |
| Ben's Lost Marbles | multiplier | 3.70% | n/a | n/a | n/a |
| Captain Flint's Treasure | multiplier | 1.85% | n/a | n/a | n/a |
n/a: the provider publishes no RTP for this bet, so its return cannot be stated.
Expected return = RTP × stake; house edge = 1 - RTP. Base RTP = win chance × (payout + 1) plus any push; where the provider publishes a per-bet RTP that figure is used and the difference is the feature/multiplier contribution.
Source: content-src/guides/treasure-island/rtp.md (checked 2026-09-06).
Each round is independent: past results do not change the next round's odds, and no wait makes an outcome "due". Theoretical figures come from the provider's published rules; observed figures come from our own tracker and change as rounds arrive. 18+. Past results do not predict future outcomes. Play with money you can afford to lose.
Frequently asked questions
- Which Treasure Island bet has the best return?
- Number 5: RTP 88.89%, house edge 11.11%. Over many rounds you keep about 88.9 of every 100 staked.
- Which Treasure Island bet has the biggest house edge?
- Number 1: RTP 66.67%, house edge 33.33%. It may pay more on a win, but the expected loss per stake is the highest on the table.
- What does expected return mean?
- Expected return is the RTP multiplied by your stake: the average amount that comes back per bet over a very large number of rounds. It says nothing about any single round.
- Why does the published RTP differ from the base payout maths?
- For bets with random multipliers (bonus rounds, lightning numbers) the base payout only covers the fixed part. The provider publishes an RTP that includes the feature; the gap between the two is the feature contribution.
More on Treasure Island: live results · RTP & odds · bonus rounds · Bonus probability calculator