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The Castle of Slotenstein

by Evoplay

The Castle of Slotenstein is a Halloween-themed online slot with 20 paylines, three Bonus boosters, Hold & Win mechanics, and the Grand Reel of Fortune. Play The Castle of Slotenstein free in demo mode or for real money, with a recorded win potential of up to 3,127.5x your bet.

Desktop game view
The Castle of Slotenstein
The Castle of Slotenstein screen

Technical Information

Release Date
10.2026
Game Model
5x3
Bet Lines
20
Paylines
20
Max Multiplier
3127
Min Bet (EUR)
0.1
Max Bet (EUR)
75
Features
Bonus Buy, Fixed Jackpots, Multipliers
Languages
  • United Kingdom
  • China
  • Portugal
  • Bulgaria
  • Germany
  • Spain
  • France
  • Croatia
  • Italy
  • Japan
  • South Korea
  • Lithuania
  • Poland
  • Romania
  • Thailand
  • Turkey
Platforms
DesktopDesktop
TabletTablet
MobileMobile

The Castle of Slotenstein Review: How to Play?

The Castle of Slotenstein is a 5-reel, 3-row slot with an RTP of 96.20%. Its Bonus Game uses three coloured Bonus symbols linked to different boosters: Green activates Shock, Purple activates Trick, and Blue activates Treat. Shock increases the starting number of spins from 3 to 4, Trick adds Purple Bonus symbols that increase Orange Bonus values on their reels, and Treat adds Blue Bonus symbols that increase the values of all Orange Bonus symbols on the game field.

The Bonus Game can start with one, two, or all three boosters active. Each new Bonus symbol resets the spin counter. Filling all three positions on a reel collects their values, clears the reel, and unlocks one section of the Grand Reel of Fortune. Unlocking all five sections awards a spin for a multiplier of 2x, 3x, 5x, or 8x, or a MINI, MEGA, SUPER, or GRAND prize. Bonus Buy provides direct access to the feature with different booster combinations. The Castle of Slotenstein demo allows players to test these mechanics for free.

The Castle of Slotenstein game FAQ

  • Can I play The Castle of Slotenstein for free?

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    Yes, you can play The Castle of Slotenstein free in demo mode to explore its Hold & Win mechanics, three boosters, and Grand Reel of Fortune without real money bets.
  • What are the three boosters in The Castle of Slotenstein?

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    The game features Shock, Trick, and Treat boosters. Shock increases the starting spins from 3 to 4, Trick increases Orange Bonus values on individual reels, and Treat increases Orange Bonus values across the game field.
  • How does the Bonus Game work?

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    The Bonus Game starts with 3 or 4 spins, depending on the active boosters. Each new Bonus symbol resets the spin counter. Filling all three positions on a reel collects their values, clears the reel, and unlocks a section of the Grand Reel of Fortune.

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