Castle of Terror II Slot by Big Time Gaming
by Big Time GamingReleased Jun 11, 2026
Free demo - play instantly in your browser
The classic-monsters sequel to Castle of Terror, this 1,024-way horror slot lets every Scatter trigger one of five reel-based Bonus Respins, then pays out through unlimited-multiplier free spins for a 20,160x top win. To start playing the Castle of Terror II demo in your browser, press the "Free Play" button below.

Specifications
| Game Type | Slots |
|---|---|
| RTP | 96.48% |
| Volatility | High |
| Max Win | 20,160x |
| Grid | 5x4 |
| Paylines | 1024 ways to win |
| Min Bet | $0.1 |
| Max Bet | $500 |
Castle of Terror Series

About Castle of Terror II Slot
Where a Scatter lands decides everything here. Every Scatter awards a Bonus Respin, and the reel it appears on sets which of five bonuses fires with it. A Scatter on reel one is Brains, flooding all the reels with extra Brain symbols. Reel two is Alive, stamping one random multiplier of x3, x5, x8 or x10 across every win in the respin. Reel three is Shock, loading any Wilds that spin in with a x2, x3, x4 or x5 boost. Reel four is Monster, turning one symbol at random, the Brains, Old Man, Lady or Lungs, fully Wild on reels two through five. Reel five is Horror, filling one of reels two, three, four or five completely with Wilds. Catch Scatters on more than one reel and the bonuses stack together, so you can run three of them at once.
Free spins hide behind that respin. Land one or more Scatters during a Bonus Respin and you get 10 of them, played under an unlimited win multiplier that keeps climbing with no cap, which is where the fattest payouts come from. If you'd rather not fish for Scatters, a ticket button buys straight into the feature. The Wild covers every symbol except the Scatter, so a Horror or Monster bonus that packs the board with Wilds can turn a single respin into a grid stacked with paying ways.
The look leans hard on classic Universal-style horror. A green Frankenstein's-monster head looms over the top of the reels, eyes lit cold white, while two mossy green gargoyle hands grip the ornate stone sides. Behind it a storm-lit haunted castle sits on a graveyard hill under a bruised purple-green sky. The characters are the monster crew, a stitched green Frankenstein, a red-faced mad scientist, a shock-haired electrified bride, joined by grislier icons in a pink pulsing Brain and a pair of green Lungs. Even the card royals get the treatment, glossy nine through Ace cut in blood-red and toxic green.
Reviewed by Arina, Slots Editor at Spinoxy Media Ltd.