Io (Moon of Jupiter)

Io (Moon of Jupiter)
Io is one of four moons orbiting Jupiter. A very barren wasteland, filled with lava lakes, Lava Geysers and Sulfur Geysers. Ores present here are Volcanic Ore (which is key component to Tier 6 Heavy Duty Plates), Copper Ore and Sulfur Ore. Dungeons are scattered across the moon, leading to a massive arena where the Evolved Boss Ghast will spawn. Defeating that will grant you access to the Tier 5 Key.

Reaching Io and Surviving There
A Tier 5 Rocket is required to reach Io from the Overworld. Tier 2 Thermal Protection and Space Suit Armor is highly recommended to stand against radiation on the surface. Oxygen is required here as well.