Gridlock Gem Blast by Switch Studios: headline RTP 96.46%.
An RTP of 96.46% means a house edge of 3.54% — the expected cost is 3.54 units per 100 staked over the long run, whatever a single session does.
Against our catalogue the number is above the median of 96.13%, higher than 76% of the games whose RTP we verified. That comparison matters more than the raw figure, because "96%" only sounds generous next to nothing.
Released 2025-04-06. Release date matters for RTP: newer titles are more likely to ship with several configurable builds, which is what lets two casinos price the same game differently.
Stakes run from 0.1 to 500 per spin on a 5 layout.
This title is tagged Gems. A theme is art direction, not maths — two games sharing every symbol can be priced differently.
Gridlock Gem Blast has a published RTP of 96.46%, a house edge of 3.54%. We have not yet found a casino serving it at a different RTP build.
Yes. Gridlock Gem Blast has a free demo with the same mathematics as the real-money version — the only thing that changes is that the balance is not yours. A demo cannot tell you the RTP build a particular casino serves.
Gridlock Gem Blast is a Switch Studios game, so the outcome is produced by the studio's certified RNG rather than by the casino, and it is not provably fair in the cryptographic sense — you cannot recompute a spin from a seed. What the casino does control is which RTP build it serves. That is the real variable, and it is measurable.