Castle of Terror 2 by Big Time Gaming: headline RTP 96.48%, High volatility, max win x20 160.
An RTP of 96.48% means a house edge of 3.52% — the expected cost is 3.52 units per 100 staked over the long run, whatever a single session does.
Castle of Terror 2 is a high volatility game: the return arrives in rare, large payouts, so long dry spells are normal rather than a malfunction. Size stakes for the drought, not the average.
The advertised ceiling is x20 160. Max win figures describe the tail of the distribution, not a realistic target: on most games with a ceiling this high the probability per spin is below one in a million.
Against our catalogue the number is above the median of 96.13%, higher than 77% of the games whose RTP we verified. That comparison matters more than the raw figure, because "96%" only sounds generous next to nothing.
Features: Bonus Buy, In-game Freespins. Note that studios frequently ship the bonus-buy path at a different RTP than the base game, and the lobby rarely says which figure it is quoting.
Released 2025-10-15. 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.
Castle of Terror 2 is one of 74 Big Time Gaming titles in our catalogue, a studio averaging 96.39% RTP across the games we could verify.
See the full Big Time Gaming game list and RTP breakdown.
This title is tagged Halloween, Horror. A theme is art direction, not maths — two games sharing every symbol can be priced differently.
Castle of Terror 2 has a published RTP of 96.48%, a house edge of 3.52%. We have not yet found a casino serving it at a different RTP build.
Yes. Castle of Terror 2 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.
Castle of Terror 2 is a Big Time Gaming 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.