Vile goblins have attacked your kingdom! Protect your lands by competently building defenses against enemies. There is a path in front of you, along which the invaders are walking, and you need to place weapons on it in strategically important places. When the goblins are nearby, the shelling will begin. Installing each weapon costs coins that fall from defeated enemies. You choose when a new wave of invaders will come, so you can prepare for the siege. The higher your level, the stronger the enemies will be.