A band of ninjas were on a secret mission to infiltrate a castle and steal its treasure! They got the treasure, but when they tried to escape through a moat, it turned out to be a trap! The water level around the moat is rising fast, and the ninjas must find a way out before the water catches up to them.
Players must build a tower for their ninja to climb by placing falling and rotating blocks on top of each other. As they build, their ninja will climb the tower, but players need to be careful they don't accidentally trap their ninja so he can't climb up the tower! In addition, they need to make sure their ninja doesn't meet his demise in the water below.