Slots with multiple certified RTP versions (2026)

All figures below describe data version 1.0.4, frozen on 11 August 2026. They are a snapshot, not a live count: later versions of this dataset carry their own DOI, and the concept DOI always resolves to the most recent one. 730 casino games, out of 3,761 with a confirmed return-to-player figure, whose provider publishes more than one certified RTP version of the same title. Covers 15 studios. A slot does not have "an RTP". Many titles ship as a set of certified builds — the same game at 96%, 94%, 91%, 87%, 84% — and the operator chooses which build to deploy. The player sees one number and cannot tell which build they were served. Every row can be checked. Each carries the sha256 of the raw HTTP response from the provider's own page and a link to a public receipt for that snapshot, returning the source URL, fetch time, HTTP status and a safe text excerpt. By studio, because a pooled figure would mislead: Play'n GO 373 of 387 titles (mean spread 11.97 pp), Yggdrasil 279 of 306 (5.06 pp), Push Gaming 39 of 39 (2.12 pp), Hacksaw Gaming 34 of 34 (8.41 pp), Endorphina 5 of 228 (0.63 pp). The remaining ten studios publish a single RTP for every title. For 676 of the 730 games the worst available version falls below 94%; for 434 it falls below 90%. The dataset does not say which version a given casino runs — operators do not publish that. Limits, method and known corrections are documented in the README.