Resources are coins that determine whether or not we can afford to drop a building. They allow us to eventually choose between cheap or expensive buildings depending on their effectiveness.

Although we won't be covering multiple buildings in the free tutorials, learning how to limit building creation is essential to any serious tower defense game.

• 0:00 Initial hearts markup and styling

• 3:18 Add heart icon

• 6:42 Decrease heart value when enemy finishes path

• 8:24 Add coins markup and styling

• 13:06 Add background gradient for contrast

• 17:28 Buy buildings with coins