To play the game, defend your treasure from the robot army by building Fire, Ice, and Physical towers. First, select a tower from the menu on the right by clicking on it, then click on an open space of the same color to build it. When the robots get close, your towers will automatically attack them. You earn gold every time you destroy a robot, which you can use to add more towers or upgrade your existing ones. Look for the High Grounds marked by a flag, where you can build any type of tower and it will have increased range. There are also Mana clouds in each level, which will give you Mana when you build a tower on them. You can also earn Mana over time, which you can spend on three powerful spells: Green Axe to chop down any tree, Blue to increase your towers' fire rate, and Red to summon a meteor on top of the robots. After beating a level, you'll earn XP and skill points, which you can use to unlock permanent advantages that carry over between levels. Use your strategic planning and tower defense skills to protect your treasure and defeat the robot army.