Your objective is protect your castle from incoming enemies. Your enemy have 3 colored soldiers: Red, Yellow and Green, you have 3 colored mines. To kill and destroy the enemy, you must place mines on the land that like color with the enemy color, it means, you only can kill red soldier with the red mine, yellow soldier with the yellow mine and green soldier with the green mine. There are 12 standard mine and 6 special mines in this game.