If you are looking for a new challenge in 2015, then why not head over to your favourite Microgaming casinos and load up the brand new Castle Builder slot, for a taste of something very different.

Castle Builder was developed by RABCAT games and is a level-based slot. If you don’t know what that means then be prepared to play a slot unlike any other slot you have played previously.

At first glance, the game looks like a typical 5×3 slot, with 15 paylines. You can make all your usual choices, there’s a medieval theme (hence all the symbols are linked to pageantry, kings, castles, knights and princesses) and the game features wilds and scatters.

Nothing unusual then about the slot you may think, but it is how the game uses the scatter symbols in particular that makes this very special.

The in-game Scatter symbols are building materials, with the material increasing in value depending on the number of scatters you land on a payline. The greater the value of the materials, the more the castle will be worth upon completion (and the bigger your bonus could be).

You keep landing scatters to build the castle until it is complete, you can then pick a suitor for the kings daughter, but be wary. You have a choice between a poor, reasonable well off and a rich suitor and if you pick the pauper, your prize will be considerably less than if you picked the rich benefactor.

After the first castle is built you then expand your kingdom by building a second, even grander castle on a new plot for your next daughter. And so the slot continues as you build larger castles, earning bigger cash wins and bonuses as the game progresses.

This is a fantastic level-based slot which will bring a new dimension to the game for slot fans and will especially appeal to players of apps and social games.

Castle Builder is available to play at your favourite Microgaming casino now. Simply choose your best online casino bonus and start building your empire!