Core is a circular Space Invaders clone, inspired by the “Polybius” legend. Can you successfully defend the core?
Rotate the cannon around the core using Left/A for counter-clockwise, and Right/D for clockwise. Press Up/W/Space to fire the cannon. Alternatively, you can enable mouse control (option on the main screen). Click to fire the cannon.
Your objective is to clear all 20 levels. Larger enemies will damage the core should they collide with it. Many complex enemies will break down into simpler components when hit.