The premise is straightforward, based on the Three Little Pigs tale. Your mission is to assist pigs in defending their homes from an army of wolves. This is accomplished by clicking on a unit and directing it along one of three paths. Of course, you can also place barriers to delay the enemy's movement and give yourself valuable time to generate money.

Everything you want to place requires hammers, the game's currency. You gain one every few seconds, so you will always have some. If you want to make more money, you can invest hammers in the village, but this is much more expensive and may leave you with insufficient funds to purchase units.

One thing to point out is that a unit doesn't show up immediately when you click on its icon; it'll slowly start walking from the house. It is crucial to buy units just when you need them, as they will vanish once they reach the end of the path. You’ll get the hammer back, but you’ll waste valuable time because a single unit can attack only one enemy. If an enemy breaks through the barrier and enters one of your three houses, you’ll lose the game instantly.

Battles take place across nine chapters, which is not exactly a lot. They are visible on a map, but you cannot select them because they are unlocked in a linear order. Each third chapter ends in a boss fight that is very difficult. The boss constantly spawns additional enemies that cut through all your defenses. The only way to survive is to plan in advance and place a lot of barriers.

Before starting a combat, you can choose the main hero and five units or assets to utilize on the battlefield. The starting selection is limited to two units, but as you go through the stages, you will unlock more. The gallery allows you to review all of the units and items, including obstacles and traps.

There are three heroes, each with a unique ability. The first is a farmer who can heal, the second is a hunter who can shoot arrows, and the third is a builder who can motivate and enhance units. Each power operates on only one lane, and there is a cool-down period following each use. A hero is important since every unit is linked to one of them. When you click on a hero, little icons appear next to the affected unit. This relationship implies that a unit or asset will cost less.