RTP versions

An RTP version is a variant of the same slot where only the long‑term theoretical payout differs. The studio supplies the game with multiple preset payout profiles. Theme, animations, symbols and features stay the same; how the lower RTP is reached, for example through different symbol weights or payouts, differs per studio. The mathematical payback expectation over a very large number of spins shifts as a result.

The casino chooses which version is activated when offering the slot. As a result, the same title screen and feature set can show a different theoretical return in different environments. For the player, the slot looks the same, but the statistical long‑term outcome differs per version. You will not see that difference in the game’s appearance; you will only find it in the game’s info or help screens. Our data fields show the value named in the game data for such slots.

Within our inferno catalogue, 90 slots are flagged in the game data with an RTP range. This means the studio delivers multiple versions and the casino chooses which one is active.

On the individual slot page we show for these titles the RTP value from the technical sheets; where that value sits within the range is not in our sources. We do not publish the exact lower bound, because it is not in our sources either and can differ by distribution.

Open the game and go to the info, help or paytable screen. Look for the line that states the RTP or theoretical return. Sometimes it appears on the first info slide, sometimes under a section with rules or worked examples. Note the value shown by the game.

Then compare this value with the value on our slot page. If the value in the game matches, the version from our game data is running. If the game shows a different value, a different version is active. The graphical presentation and features remain the same; only the long‑term expectation changes per version. Repeat this check when the studio updates the game, as versions in distribution can switch.