Terraria Events: Invasions, Moons & Weather

Goblin Army Pre-Hardmode

Starts: Can arrive at dawn once a Shadow Orb or Crimson Heart is broken and a player has over 200 max health, or summon it with a Goblin Battle Standard.

Waves of goblins march on your town until enough are killed. Beating it frees the Goblin Tinkerer, and in Hardmode Goblin Summoners join.

Rewards: Harpoon, Spiky Ball, Shadowflame Knife, Shadowflame Bow, Shadowflame Hex Doll

Old One's Army Pre-Hardmode

Starts: Place an Eternia Crystal on an Eternia Crystal Stand, both bought from the Tavernkeep.

A tower defense event where you guard the crystal through waves of Etherian foes. Tougher tiers unlock after a mechanical boss and after Golem.

Bosses: Dark Mage, Ogre, Betsy

Rewards: Defender Medal, Squire's Shield, Apprentice's Scarf, Huntress's Buckler, Monk's Belt, Sky Dragon's Fury, Flying Dragon, Betsy's Wings

Frost Legion Hardmode

Starts: Use a Snow Globe, which drops from presents opened in Hardmode during Christmas.

An army of armed snowmen invades until enough are destroyed. Winning lets Santa Claus move in during Christmas.

Rewards: Snow Block

Pirate Invasion Hardmode

Starts: Can happen at random in Hardmode, or use a Pirate Map dropped by Ocean enemies in Hardmode.

Pirates and their ship storm your town until enough are beaten. Winning brings the Pirate NPC.

Bosses: Flying Dutchman

Rewards: Coin Gun, Lucky Coin, Discount Card, Pirate Staff, Gold Ring, Cutlass, Golden Chest

Martian Madness Hardmode

Starts: After Golem, let a Martian Probe spot you and fly away near the edges of the surface or in space.

Martian soldiers, walkers and saucers invade until enough are killed. Its loot includes some of the best gear before the Moon Lord.

Bosses: Martian Saucer

Rewards: Laser Drill, Charged Blaster Cannon, Influx Waver, Xenopopper, Electrosphere Launcher, Anti-Gravity Hook, Cosmic Car Key, Laser Machinegun

Blood Moon Pre-Hardmode

Starts: Has a 1 in 9 chance each night once a player has more than 120 max health, or can be forced with a Bloody Tear.

A red moon brings many more enemies, zombies that open doors and nasty fishing catches. It lasts the whole night.

Bosses: Dreadnautilus (Hardmode, fished up)

Rewards: Money Trough, Shark Tooth Necklace, Bloody Tear, Vampire Frog Staff, Blood Rain Bow, Sanguine Staff, Bananarang

Pumpkin Moon Hardmode

Starts: Use a Pumpkin Moon Medallion at night.

A wave based Halloween night with 15 waves of rising difficulty. The main loot comes from its mini-bosses.

Bosses: Headless Horseman, Mourning Wood, Pumpking

Rewards: Spooky Wood, Spooky Hook, Raven Staff, The Horseman's Blade, Bat Scepter, Candy Corn Rifle, Jack 'O Lantern Launcher, Necromantic Scroll

Frost Moon Hardmode

Starts: Use a Naughty Present at night.

A Christmas version of the Pumpkin Moon with 20 waves and tougher enemies. It is one of the hardest events before the Lunar Events.

Bosses: Everscream, Santa-NK1, Ice Queen

Rewards: Razorpine, Christmas Tree Sword, Festive Wings, Elf Melter, Chain Gun, Blizzard Staff, North Pole, Snowman Cannon

Slime Rain Pre-Hardmode

Starts: Rare random event once a player has more than 140 max health and 8 defense.

Slimes pour from the sky for 9 to 15 in-game hours. Killing 150 of them (75 once he is beaten) brings out King Slime.

Bosses: King Slime

Rewards: Slime Gun, Slime Hook, Slimy Saddle, Royal Gel, Solidifier, Ninja Hood, Slime Staff

The Torch God Pre-Hardmode

Starts: Starts when about 100 torches are placed close together below the surface.

Your torches fly at you as fireballs while you are blinded. Survive until they are all spent to earn the Torch God's Favor.

Rewards: Torch God's Favor

Solar Eclipse Hardmode

Starts: Has a 1 in 20 chance at dawn after any mechanical boss is dead, or use a Solar Tablet.

The sun goes dark and horror movie monsters swarm the land until dusk. Stronger foes join after all mechs and after Plantera.

Bosses: Mothron

Rewards: Broken Hero Sword, Death Sickle, Moon Stone, Neptune's Shell, Butcher's Chainsaw, Deadly Sphere Staff, Psycho Knife, Mothron Wings

Lunar Events Hardmode

Starts: Begins as soon as the Lunatic Cultist is defeated at the Dungeon entrance.

Four Celestial Pillars appear, each shielded until you kill enough of its themed enemies. Destroying all four summons the Moon Lord.

Bosses: Celestial Pillars, Moon Lord

Rewards: Solar Fragment, Nebula Fragment, Vortex Fragment, Stardust Fragment, Luminite, Meowmere, Terrarian, Last Prism

Rain Any

Starts: Starts at random and lasts a full in-game day.

Rain falls on all surface biomes, turning into a blizzard in the snow. Rain enemies appear, NPCs stay indoors and fishing gets a power boost.

Bosses: Deerclops (rare, during a blizzard)

Rewards: Rain Hat, Rain Coat, Umbrella Hat, Nimbus Rod, Ice Feather, Frost Core

Sandstorm Any

Starts: Starts at random in the Desert when the wind is strong, above 30 mph.

Blowing sand cuts visibility and pushes players around. Desert enemies from underground, and in Hardmode sand sharks and Sand Elementals, roam the surface.

Rewards: Forbidden Fragment, Sand Shark Kite, Shark Fin, Nachos

Windy Day Any

Starts: Happens on its own whenever the wind speed climbs above 20 mph.

Trees and banners sway, balloon slimes and angry dandelions show up, and some enemies can drop kites.

Rewards: Bunny Kite, Goldfish Kite, Blue Kite, Paper Airplane, Pin Wheel

Thunderstorm Any

Starts: Happens when a heavy Rain and a Windy Day overlap.

A stronger form of Rain with lightning flashes, darker skies and fierce wind. All normal Rain effects apply.

Rewards: Rain Hat, Rain Coat, Umbrella Hat, Nimbus Rod

Meteor Shower Any

Starts: Occurs at random during the night.

Shooting stars fill the background, many more Fallen Stars land, and Enchanted Nightcrawlers come out as bait.

Rewards: Fallen Star, Enchanted Nightcrawler

Party Any

Starts: Starts at random on some mornings when one to three NPCs decide to throw it, or any time you switch on a Party Center.

NPCs wear party hats, balloons drift in the sky and the Party Girl and Clothier sell extra novelty items. It lasts until dusk.

Rewards: Slice of Cake, Party Present, Pigronata, Silly Balloons, Streamers, Bundled Party Balloons, Silly Sunflower Petals

Lantern Night Any

Starts: Happens the night after you beat a boss or invasion for the first time, and at random after the Moon Lord is dead.

Glowing lanterns rise into the sky and every player gets a small boost to luck for the night.

Rewards: Release Lantern