Castle Builder from the small game studio Rabcat and is definitiely something out of the ordinary. The theme is castle building, and as you play, you gather building material that allow you to build increasingly amazing castles. As your castles grow bigger, so does your potential for winning a lot on this slot.

Castle Builder was released by Rabcat in late 2012, but remained a fairly obscure title – known only to the initiated – until 2014 when Microgaming decided to include Castle Builder in their Quickfire platsform. Suddenly, Castle Builder was reaching a much bigger audience than before.

Castle Builder is set in a fantasy world where three kings rule over three kingdoms. At the start of the game, you are hired to build a castle for one of the princesses. If you succeed, you will be hired to do more jobs, and increase your earning potential.

To build castles, you need building material, and you obtain building materials by gathering them when they show up on the reels. In addition to standard building material, you can also obtain extra fancy building materials – in bronze, silver or gold. The more fancy stuff you put into a castle, the more valuable the castle becomes.

Once a castle is finnished, a princess will move in and start recieving suitors who are interested in marrying her and living with her in the beautiful castle. It’s good for you if she picks a rich husband, because he will reward you well for the castle.

The maximum number of castles you can build in Castle Builder is 30 (ten in each of the three kingdoms).

About Castle Builder

  • Game developer: RabCat
  • Launch year: 2012
  • Reels: 5
  • Paylines: 15
  • Smallest wager: 0.01 x 1 payline = 0.01
  • Largest wager: 1 x 15 paylines = 15
  • Available payline wager values: 0.01 / 0.02 / 0.05 / 0.10 / 0.20 / 0.25 / 0.50 / 1
  • Special features: Wild symbol, Gather building materials and build 30 castles
  • Highest fixed win: 20,000
  • Progressive jackpot: No
  • RTP: 96.47%


The theme is castle building in a fantasy world inspired by the Middle Ages. Many symbols are royal persons or precious items, but there is also building materials that you can collect and incorporate into your castles. The builder is a wild symbol.

Wild symbol

The builder is a wild symbol. It can replace any of the ordinary symbols.

Status levels and medals

As you finnish various tasks in the game, you will be rewarded with medals. Which medals you can recieve depends on your current status level in this Middle Age society. You start out as a mere Builder, but can gradually advance to become Master Builder, Constrution Expert, Architecht, and Castle Builder.

The higher the status level, the higher is the potential for really big wins. Generally speaking, a Master Builder will make more money than a Builder, and so on.

Free Spin round

Unlike many other modern slot macines, Castle Builder has no Free Spin round.