Martian Madness

Martian Madness is a Hardmode, post-Plantera invasion-style event that includes several alien-themed enemies. It can be triggered after Golem has been defeated. The event includes an extremely difficult boss, the Flying Saucer.

Martian Madness is triggered when a Martian Probe spawns randomly and detects a player (turning from green to red), and is then allowed to escape. The event can be prevented by avoiding the Probe, or by destroying it before it can escape; although destroying it is difficult, as it flies off quickly once the detection occurs or the Probe is damaged. Once triggered, then status message "Martians are invading!" appears.