The Stake Engine catalogue checked 2026-08-19 does not identify a separate base RTP for Extreme Keno by Bolly Games. RTP Ledger therefore leaves the base value unknown and lists the 4 published modes separately.
The catalogue does not identify a separate base return. RTP Ledger leaves the base return unknown. Use the mode table for the published values.
At the two-decimal display precision, bonus buy has the highest displayed RTP at 96.68%. choose 5 has the lowest displayed RTP at 96.19%. The difference between the displayed extremes is 0.49 percentage points.
| Mode | Type | Published RTP | House edge | Reported events |
|---|---|---|---|---|
| choose 3 | Other feature or mode | 96.38% | 3.62% | 100,000 |
| choose 4 | Other feature or mode | 96.49% | 3.51% | 100,000 |
| choose 5 | Other feature or mode | 96.19% | 3.81% | 100,000 |
| bonus buy | Mode name includes “buy” | 96.68% | 3.32% | 100,000 |
RTP Ledger checked Stake Engine (fair.stake-engine.com) on 2026-08-19. RTP Ledger displays each published mode RTP rounded to two decimal places and calculates house edge as 100 − displayed RTP. “Reported events” preserves the source field name; it is not labelled as observed rounds or unique outcomes. RTP Ledger does not independently recalculate the catalogue RTP from weights and payouts.
The Stake Engine catalogue does not identify a separate base-game RTP for Extreme Keno by Bolly Games. RTP Ledger lists each published mode and leaves the base RTP unknown.
At the two-decimal display precision, bonus buy has the highest displayed RTP at 96.68%. choose 5 has the lowest displayed RTP at 96.19%.
The catalogue lists a bonus-buy mode. The available data does not support an exact comparison with the base game.
Stake Engine published the catalogue used for the game record. Compare the in-game mode with the published mode table before you play. RTP Ledger can earn a commission if you open Stake through the link. The commission does not change the RTP figures, the publication decision, or the order of records.
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Bolly Games has 22 games in the catalogue with a median base RTP of 96.07%.
Version 4, first recorded by RTP Ledger on 2026-08-19. No version change has been recorded since tracking began.