The Stake Engine catalogue checked 2026-09-26 does not identify a separate base RTP for Swampy Gremlins by Stardust. RTP Ledger therefore leaves the base value unknown and lists the 6 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, 6 modes share the highest displayed RTP of 96%: base game, muddy luck, and sticky vines and 3 more. 6 modes share the lowest displayed RTP of 96%: base game, muddy luck, and sticky vines and 3 more. The difference between the displayed extremes is 0 percentage points.
| Mode | Type | Published RTP | House edge | Reported events |
|---|---|---|---|---|
| base game | Other feature or mode | 96% | 4% | 10,000 |
| muddy luck | Other feature or mode | 96% | 4% | 10,000 |
| swamp spins | Other feature or mode | 96% | 4% | 10,000 |
| sticky vines | Other feature or mode | 96% | 4% | 10,000 |
| super swirl | Other feature or mode | 96% | 4% | 10,000 |
| swamp splash | Other feature or mode | 96% | 4% | 10,000 |
RTP Ledger checked Stake Engine (fair.stake-engine.com) on 2026-09-26. 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 Swampy Gremlins by Stardust. RTP Ledger lists each published mode and leaves the base RTP unknown.
At the two-decimal display precision, 6 modes share the highest displayed RTP of 96%: base game, muddy luck, and sticky vines and 3 more. 6 modes share the lowest displayed RTP of 96%: base game, muddy luck, and sticky vines and 3 more.
RTP Ledger uses the mode RTP values and reported event counts in the Stake Engine catalogue snapshot dated 2026-09-26. RTP values are rounded to two decimal places for presentation while the source precision remains in the data record. The source field is named “events”; RTP Ledger does not relabel it as observed rounds or unique outcomes.
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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5savePublisher-supplied campaign code. It does not confirm bonus eligibility or terms.
Stardust has fewer than five catalogue records, so RTP Ledger keeps its studio profile inside the complete games list instead of a separate page.
Version 2, first recorded by RTP Ledger on 2026-09-11. No version change has been recorded since tracking began.
The catalogue keeps 1 published version of Swampy Gremlins. The catalogue does not date its versions; the last column shows when RTP Ledger first recorded a version as active. All Stake Engine moves are listed on the RTP changes page.
| Version | Base RTP | Best buy RTP | Modes | Status | First recorded by RTP Ledger |
|---|---|---|---|---|---|
| v2 | — | — | 6 | Active | 2026-09-11 |