Castle Builder II

by Rabcat Gambling
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Game features
Rabcat Gambling
July 2017
Bet Size
€0.15 - 30
Max Win
Bonus Guarantee, Collect Symbols, Expanding Wild, Free Spins, Pick Bonus, Scatter, Stacked Wild, Wild
Adventures, History, Love and Romance, Medieval, Pirates and Treasures

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Pros and cons
  • Completely unique slot combined with videogame elements
  • Massive prizes that improve the more you play
  • Cool graphics and fantasy theme
  • Lots of choices can be confusing to start out with
  • Not a traditional slot game
  • Takes time to build up to the biggest prizes

Castle Builder II Slot Review

Castle Builder II combines fantasy videogame elements with slot gameplay to create something entirely new! Choose your character. Gather your stores of building materials as you hit winning lines. Use those stores to build up various different castles, which change the reels’ background and improve your prizes. You can even hit large cash payouts when the Royal Wedding arrives at your castle gates – will you pick the right suitor?

Unlike most slots out there, Castle Builder II’s reels are only half the focus of this totally unique game. The other half of the screen is taken up by one of many picturesque locations with the foundations of a castle taking centre stage.

As you play, the castle builds up – and once it’s finished you can move to a different location on an interactive map. Everything from the music to the reel sounds then changes based on that location, and a new castle begins construction! There are not many slot games out there quite like Castle Builder II that we can compare it to.

An equally oddball format game is Kobushi, a sushi-ninja (yes, sushi ninjas) cartoon slot by iSoftBet. It features occasionally side scrolling reels and some character progression. A modern yet more traditional slot game with a similar theme is the hugely popular Game of Thrones jackpot slot by Microgaming, licenced from the equally massive TV show and book series.

Overall Rabcat’s Castle Builder II could easily be the most unique online slot game you’ve seen. It was one of ours, and we’ve played literally thousands of titles. Yes, it can be fairly complicated at first, and a little intimidating for new players. However, it’s got excellent graphics and sound, innovative gameplay and the potential for great prizes that level up as you play!

How to Play Castle Builder II

The setup here is five reels and 15 paylines. You can adjust your stake per line – from 0.01 (total 0.15) up to 2 per line, or 30 total. If you get tired of building castles on your way to completing the kingdom, there’s also an Autospin feature!

The overall RTP of Castle Builder II is between 95.5% and 97.75%. That’s because the structure of this game guarantees you’ll get access to potentially bigger wins the more you play. For example, you get stacked Wilds (and therefore a higher RTP) if you pick the character Igor at the start. But he’s only available once you’ve completed all the castles in the game with one of the other characters.

Building castles then – it’s the name of the game. Therefore, half the symbols, the lower paying ones, are raw materials: wood, stone, bricks, iron ore. Each time you win a line with these in, you’ll add the winning symbols into box on the castle side of the screen. Fill the box, which takes 5-15 pieces depending on the castle’s level, to get a building block. A piece is added to the castle, with a cool animation, and the building meter moves along.

The other symbols you’ll see (gold rings, bars, treasure) are just payouts and don’t help you build castles. Still treasure chests can pay up to 165x for a line full of them!

There are also two special symbols:

  • Wild symbols stand in for any other symbol when creating a winning line. They take the form of whichever character you picked at the beginning.
  • The scatter symbol is a sort of whirpool thing. It’s only available playing as the character Mandy. Pull three or more of them to start the free spins round, with 10 spins if you pull 3 and up to 20 spins for all 5.

Game Rules

Castle Builder II Features

This whole game is a super fun to play and totally unique among online slots. However, it’s better if you can put in the time, as the biggest potential prizes come after you complete castles. At top levels that can take some investment. Still, it looks great and plays like a dream – even for casual players.

Character Pick

You get to choose from three characters at the start of Castle Builder II, which actually effect the game:

  • Sam is a master builder, meaning all castles and building blocks need less steps to finish.
  • Mandy means slower castle building, but you get free spins scatters.
  • Igor is only available after completing all map sections. He builds fast like Sam, but also offers expanding Wilds that can fill whole reels.
Character Pick
Free Spins Round

Super simple free spins round. There’re no extra features, but it helps you stack up building materials to get to the big prizes. Only available if you pick the character Mandy.

Royal Wedding Bonus

The big prizes come here. Once you complete a castle, suitors arrive for your daughter, and you have to pick one! Your first castle, only two visit. At the top levels you’ll have five. Each one pays differently – with up to 750x your bet available!

Kingdom Map

Once you finish a castle, you can move to another section of a cool interactive map. They all have different themes and castles to build, like Medieval, Jungle, Pirate etc.

Kingdom Map
Cup Challenges

Each castle is part of a Bronze, Silver, Gold or Platinum series. Each level takes more materials to finish a block. However, they offer more suitors with bigger prizes when the Royal Wedding bonus rolls around!

Cup Challenges

Play Castle Builder II for real money

100% up to €300
100% up to €100
21 Free spins
100% up to €100
100% up to €100

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