Castle Of Terror
Castle Of Terror is a vampire-themed slot by Big Time Gaming utilizing a 4,096 ways to win mechanic. The base game highlights a holy water feature that transforms high-paying characters into wilds and increases a win multiplier. Triggering the free spins guarantees this wild transformation on every turn. An enhanced version of the bonus is also available, which doubles the multiplier increments. Players can also utilize a special exchange function to gamble larger payouts for direct access to the bonus round.
RTP published by the studio / Castle Of Terror
96.72%
Scale starts at 95% · other versions not published
Figures: Big Time Gaming game page, checked October 6, 2026; each value is linked to its page in the game facts table. Artwork © Big Time Gaming; image file from the Slots-Info slot database, not supplied by the studio.
Game facts
| Metric | Value |
|---|---|
| Studio | Big Time Gaming1 |
| RTP versions | 96.72%1 |
| Other RTP versions | Not published by the studio |
| Volatility | Not published |
| Max win | Not published |
| Bet range | Not published |
| Layout | 4096 Ways1 |
| Features | Holy Water, Free Spins, Enhanced Free Spins, Win Exchange1 |
| Bonus buy | Not published |
| Release date | Not published by the studio |
Numbers link each value to the page it comes from. “Not published” means the studio does not state it; we add it when it does and never estimate a spec. Figures from casino sites are not used.
RTP versions
Big Time Gaming publishes one RTP setting for Castle Of Terror: 96.72%. Other RTP versions are not published by the studio. Check the game’s help or paytable screen at your casino to see which version it runs.
| RTP version | House edge | Return per $100, long run | vs highest |
|---|---|---|---|
| 96.72% (highest) | 3.28% | $96.72 | — |
House edge = 100% minus RTP. RTP is a long-run average across all players, not a prediction for a session.
Features
- Holy Water
- Free Spins
- Enhanced Free Spins
- Win Exchange
Where it’s available
Not confirmed. Availability in regulated North American markets is not confirmed yet.
Regulated markets only; availability varies by casino.
