Astral Infection

Not to be confused with the debuff of the same name, or the consumable Astral Injection.

The parabolic shape of the Astral Infection biome, as viewed on the map in a large world.
The meteor can be seen in pink at the top-center of the biome, with the Astral Beacon pillar positioned to the right of it.

"This twisted dreamscape, surrounded by unnatural pillars under a dark and hazy sky."

The Astral Infection is a Hardmode biome added by the Calamity Mod. It crash-lands into the Dungeon side of the world via a meteor upon defeating the Wall of Flesh, which infects the nearby terrain and extends somewhat deep underground. The biome is filled with a sickly purple haze, and is populated by many alien creatures as well as dark monoliths of various sizes. It also contains a large Astral Monolith pillar, which houses an Astral Beacon on top of it. Players are alerted of the Astral Infection's arrival via a status message: "A star has fallen from the heavens!"

The meteor itself is made out of Astral Ore, which can only be mined after defeating the Astrum Deus boss. Tiles in a large area around and below the impact site are converted into Astral versions of themselves, including Astral Dirt, Astral Stone, Astral Sand, and Astral Ice, among others. Trees are converted into Astral Monoliths as well. However, the infection does not actively spread; only the initial impact converts tiles.

Two bosses, Astrum Aureus and Astrum Deus, can be summoned in this biome.

In Death Mode, the gravity here will be similar to the Space layer. This can be negated with a Gravity Normalizer Potion. The atmosphere will also appear to be hazier.

Contents

Astral Infection
Characters		Unique Drops		Music
Astral Probe Big Sightseer Small Sightseer On Surface: Aries Astral Slime Atlas Mantis Nova Underground: Astralachnea Hive Hiveling Stellar Culex Desert: Fusion Feeder Hadarian	Critters: Enchanted Nightcrawler Twinkler Bosses: Astrum Aureus Astrum Deus	From all enemies: Stardust From Atlases: Titan Heart After defeating Astrum Aureus: From Aries: Stellar Knife From Astralachneas: Astralachnea Staff From Astral Slimes: Abandoned Slime Staff From Atlases: Titan Arm From Hadarians: Hadarian Membrane From Hives: Hive Pod From Mantises: Astral Scythe From Novas: Stellar Cannon From Stellar Culexes: Starbuster Core From Astral Slimes after defeating Astrum Deus: Astral Ore	From terrain: Astral Clay Astral Dirt Astral Ice Astral Ore Astral Monolith Astral Sand Astral Sandstone Astral Snow Astral Stone Celestial Remains Hardened Astral Sand Novae Slag Astral Beacon From Fishing: Aldebaran Alewife Astral Crate Twinkling Pollox Procyonid Prawn Arcturus Astroidean Gacruxian Mollusk Polaris Parrotfish Ursa Sergeant	On Surface: Music Box (Astral Biome) Underground: Music Box (Underground Astral Biome)

Conditions

An Astral Infection meteor has a 100% chance of spawning after defeating the Wall of Flesh for the first time. After the first meteor has landed, defeating Astrum Aureus will always spawn a meteor in the world, assuming the limits have not been met yet.

No new meteors will fall if there are already a certain number of Astral Ore blocks above 0 depth. The limits are:

• Small worlds: 200 Astral Ore blocks
• Medium worlds: 400 Astral Ore blocks
• Large worlds: 600 Astral Ore blocks

Alternatively, meteors will fall but not infect any nearby terrain if there are already a certain number of Astral-infected tiles in the world. Astral Ore blocks are not counted toward this total. The limits are:

• Small worlds: 400 Astral-infected tiles
• Medium worlds: 600 Astral-infected tiles
• Large worlds: 800 Astral-infected tiles

16% of the world centered on the player's spawn point is protected from falling meteors. Meteors will not land within 25 tiles of a player, NPC, or a chest, nor directly on top of a platform.

Building a completed Skybridge across the entire world is not recommended, as this will block the Astral Infection meteor and prevent the Astral Infection biome from spawning.

Notes

Map Background.

• Player-created Astral biomes are possible by placing at least 950 Astral Dirt, Astral Stone, and/or Astral Ore in an area. Astral Grass that grows on Astral Dirt also counts toward this total.
  • Astral Ice biomes require 300 Astral Ice.
  • Astral Desert biomes require 950 Astral Sand, Hardened Astral Sand, and/or Astral Sandstone.
• Although meteorites will avoid hitting chests, one may still hit the edges of a Floating Island or a Planetoid.
• Astral-infected blocks can be converted back to normal using Green Solution with a Clentaminator. Conversely, blocks can be converted into their Astral Infection versions using Astral Solution.
• Only the meteor's initial impact will infect nearby tiles. The infection will not spread on its own, unlike Evil Biomes or The Hallow.

Trivia

• The Surface Astral Infection's theme is The Heaven-Sent Abomination, which was composed by the artist DM DOKURO.
  • This theme is a remake of the original theme that used to play in the biome: Heaven's Hell-Sent Gift.
  • If the Calamity Music add-on mod is disabled, the Space biome's theme will play for the whole Astral Infection instead.
• The Underground Astral Infection's theme is Treasures Within the Abomination, which was also composed by the artist DM DOKURO.
• The Astral Infection can infect several blocks that are unaffected by the Corruption, Crimson, or Hallow, including Dirt, Snow, Clay, Silt, and Desert Fossils.
• The Enchanted Nightcrawlers which spawn naturally in this biome are clones of the original vanilla NPC, which drop the same item when caught with a Bug Net.
• The Astral Infection used to be only a mini-biome known as the "Astral Meteor", which did not infect any tiles upon its crashing and possessed a different color scheme of yellow and pink.

Lore

Template:Lore