Eye of Cthulhu

The Eye of Cthulhu is a Boss monster that the player can fight. It can be summoned by creating a Suspicious Looking Eye at a Demon Altar. In order to summon the boss, it has to be Night time; otherwise, the player will take thousands of points in damage. The boss has been described as the easiest by the game's developers.

Strategy
The Eye of Cthulhu acts like a larger Demon Eye, flying around the place it fights the player, trying to ram the player, often bumping into walls and the floor. Because of it's large size, a Bow and Shurikens are recommended to be brought to the fight, as the player can jump and dodge while constantly hitting the Eye.

After the Eye loses half of it's health, it will transform, losing it's pupil, which is replaced by a large mouth. It's attacks become more powerful and it becomes faster. After it is defeated, it will gib just like a regular enemy and it will drop items, including Demonite Ore.