About Castle of Terror

Castle of Terror – Terror can turn into massive wins through the increasing multiplier, as you can win up to 61,720x your bet per spin.

Castle of Terror is a seasonal slot (Halloween) that can be enjoyed all year round as it’s entertaining and includes many elements that made Big Time Gaming (BTG) slots popular in the past.

At the same time, you have the chance to win big.

The slot title might indicate that you might need to prepare yourself for some disturbing graphics and surprises, as seen in Nolimit City games like Serial or Mental, but this is not BTG´s style, and they kept it all very easygoing with some symbols turning into vampires.

Castle of Terror RTP

Big Time Gaming has yet to grow accustomed to releasing various Return To Player (RTP) versions of their slots.

Therefore you can be quite sure to find the 96.72% RTP version of Castle of Terror in most licensed online casinos.

However, another slot version is available, averaging a payout of 91%.

This lower-paying version is mainly aimed at the German market, though, due to the tax setup in that regulated market.

What is the best Castle of Terror casino?

CasinoWizard has analyzed hundreds of online casinos to find reliable casinos to offer to our visitors.

Here you can choose among these licensed casinos that offer their players the best-paying version of Castle of Terror.


Gameplay and features

Castle of Terror is a highly volatile slot played on a 6-reel and 4-row game panel with 4,096 ways to win. Bets start from $/€0.20 and go up to $/€15 per spin.

Apart from the Holy Water feature that appears in both the base and bonus game, the Free Spins offer the main excitement in this slot.

Features explained:

  • Holy Water = Triggered randomly in the base game and on each spin during the Free Spins. Any symbol affected by the Holy Water and turning Wild increases the multiplier.
  • Two Bonus Games = Three Silver Castle Scatters trigger 12 Free Spins. Include one Gold Castle Scatter among the triggering Scatters, and you play with Enhanced Free Spins.

The multiplier doesn’t reset between spins, and any Wilds increase it by +1 (or +2 in the enhanced version).

Every x20 multiplier reached adds another +6 spins to your total. 

  • Win Exchange = Any 100x (or more) wins can be exchanged to Free Spins by paying 100x your stake. Any 25x – 100x wins can be gambled towards Free Spins as well.

Castle of Terror Bonus Buy

In countries where allowed, you can buy the Free Spins by paying 70x your bet or 200x for the Enhanced Free Spins.


What is the maximum win on Castle of Terror?

Castle of Terror offers players a very high max win potential, as you can win up to 61,720x your bet per spin.

Reaching high multiplier levels in the Free Spins is your key to big wins.

Check our Highest-max win Big Time Gaming Slots list for other games with high max wins.

CasinoWizard’s verdict: 3 out of 5 stars

We often associate Big Time Gaming with Megaways slots as they are the game-changing mechanic’s inventors and the company behind hits like Bonanza Megaways, Extra Chilli Megaways, and Who Wants to be a Millionaire.

BTG skipped the Megaways and cascade mechanic this time and went for a different setup. 

Though many familiar Big Time Gaming elements have remained, BTG fans will quickly recognize these.

Castle of Terror is a solid slot where the Free Spins can transform your session into a thrilling experience where big wins can be reached.

However, the slot does lack that extra oomph that made some of their previous releases outstanding.

While Castle of Terror will be popular during Halloween, it will only remain on the top lists for a short time.

Find more high-RTP slots

Low RTP casinos for Castle of Terror
Title: Castle of Terror
Provider: Big Time Gaming
Genre: Video slot
Theme: Scary
RTP: 91.00% | 96.56%
Volatility: High
Paylines: 4,096 ways to win
Minimum bet: $/€0.20
Maximum bet: $/€40
Max. win: 61,720x