Unlike most slot games, Castle Builder is a 5 reeled progressive online slot machine game. This means that this is a level based game such that the player is required to conquer each level before progressing on to the next. The game revolves around the concept that the gamer has to build 35 castles in the kingdom as the king demands and help the royal princess in choosing a suitor.
Castle Builder Online Slot
The materials to build the castle are won from the slot machine game which has 15 paylines. Besides this, the king also gives rewards after completion of each castle which adds to the winnings. Overall the RTP of the game is as high as 96% which is much more than most other casino games. This online slot machine game also has a bonus mini-game along with the reeling fun which involves choosing a suitor for the princess. If the right suitor is chosen, more rewards are given which add to the winnings.