Events


An example of an event. In this case, it is the Frost Legion. The progress bar’s range; on the left is the house and the right the limit, on a small world.

Events (some also known as Invasions) are temporary occasions where varieties of special enemies spawn, most at elevated spawn rates, even near NPCs, and attack players. Some events can occur randomly during gameplay, while others can be triggered via certain summoning items or special circumstances. Events spawn their own unique enemies not seen during ordinary gameplay, which can, in turn, drop unique items that are only obtainable within the event. Some events also bring unique visuals and a unique atmosphere, such as an altered Moon and noticeable shaders applied to the screen. Events also are accompanied by their own special music, adding on to their theme. Depending on the particular event, they may last until a certain time limit is reached, or until a certain number of enemies are defeated.

On the Desktop version Desktop version, Console version Console version, and Mobile version Mobile version, a progress bar can be seen in the bottom right corner of the screen to indicate how far the player has gone into the event, and how far they are from completing it. It only appears during invasion-style events (Goblin Army, Slime RainDesktop, Console, and Mobile versions (only if 75/150 slimes are defeated), Old One’s ArmyDesktop, Console, and Mobile versions, Frost Legion, Pirate Invasion, Pumpkin Moon, Frost Moon, and Martian MadnessDesktop, Console, and Mobile versions) and will not appear during events that are time-limited (Blood Moon, Rain, Slime RainDesktop, Console, and Mobile versions (only if less than 75/150 slimes are killed), SandstormDesktop, Console, and Mobile versions, and Solar Eclipse).

Note that certain invasions (Goblin Army, Frost Legion, Pirate Invasion, and Martian MadnessDesktop, Console, and Mobile versions) have location requirements. The player must be no deeper than 67.5 tiles below the surface, and the player must be within 187.5 tiles horizontally of the location of the invasion. If the invasion has reached the center of the world, then the horizontal check can also be satisfied by the player being within 187.5 tiles horizontally of any town NPC, although at a reduced spawn rate. The town NPC’s vertical position is not checked and so they can be housed far above or below your arena.

There are currently Desktop and Mobile versions 19 / Console Version 14 / Old-gen console version3DS version 8 different events and invasions.

The PartyDesktop, Console, and Mobile versions, created to celebrate Terraria‘s 5th birthday, and the Lantern NightDesktop and Mobile versions are the only events that do not spawn unique enemies nor play special music.

Party Desktop, Console, and Mobile versionsBiomeBannerParty.png

Initiated randomly by one or two NPCs during the day, or by manually activating a Party CenterParty CenterDesktop, Console, and Mobile versions.

During a Party most NPCs, and even some enemies, can be seen wearing a Party Hat, will display unique dialog when spoken to and some will sell unique items.

While a Party is going on, different colored balloons are floating all around the sky in the background.

The event will always end on dusk.

Lantern Night Desktop and Mobile versionsBiomeBannerLanternNight.png

Occurs the night after a boss or invasion has been defeated, or randomly at night after the Moon Lord has been defeated.

The Lantern Night is an event that occurs in celebration of the player’s victory over a boss or invasion. The Party Girl will sell the Release Lantern and the player will have a flat +0.3 increase to their Luck stat.

During such a night many lanterns can be seen rising up into the sky in the background.

BiomeBannerRain.png

Rain can occur in any surface biome, changing the theme music and background, as well as dimming the lighting. Goldfish start to walk on land, and most NPCs will have unique dialog. Once the rain has ended, the effects fade away and the affected biome returns to normal. Rain in a Snow biome becomes a blizzard.

Rain always lasts 24 in-game hours.

In addition to regular surface enemies, the following enemies will spawn:

WaterleafWaterleaf plants, found in the Desert, will bloom during rain. Furthermore, NPCs will remain in their houses regardless of the Day/Night Cycle and all players are granted a +20% boost to their Fishing Power.

Sandstorm Desktop, Console, and Mobile versionsBiomeBannerSandstorm.png

A Sandstorm only affects players in a Desert. During a Sandstorm, visibility is somewhat decreased, the Mighty Wind debuff will be inflicted, pushing all creatures afflicted with it in the direction of the wind, and particles will appear in the dusty yellow background. Sandstorms can also occur in Hallowed, Corrupted, and Crimson Deserts.

In addition to regular Desert enemies, the following enemies will spawn:

Windy Day Desktop and Mobile versionsBiomeBannerWindyDay.png

A Windy Day results in increased cloud cover and stronger wind effects. If a Windy Day happens at the same time as a Rain, the result is a Thunderstorm.

In addition to regular Forest surface enemies, the following enemies will spawn:

Thunderstorm Desktop and Mobile versionsBiomeBannerThunderstorm.png A Thunderstorm is a rare weather event where both the Rain and Windy Day events combine. During a Thunderstorm, lightning will occasionally flash on the screen and the lighting will dim even further than the Rain. The wind also blows much more ferociously than normal. All effects from the Rain event also occur during a Thunderstorm. Meteor Shower Desktop and Mobile versionsBiomeBannerMeteorShower.png

Occurs randomly at night.

A Meteor Shower is an event during which falling stars appear all throughout the sky in the background. Meteor Showers greatly increase the spawn rate of Fallen Stars, and causes Enchanted NightcrawlerEnchanted NightcrawlersDesktop, Console, and Mobile versions to spawn, resulting in easily obtainable bait.

BiomeBannerBloodMoon.png

The Blood Moon is rising…

Has a 1/9 chance of occurring every night when a player has over 120 health, or when manually summoned with a Bloody TearBloody TearDesktop and Mobile versions.

The Blood Moon is an event that lasts an entire night. During this event, the spawn rate of enemies and the maximum amount of enemies that can be on the screen at any time is increased. Enemies will also spawn near NPCs and most become capable of opening doors with a couple hits, even though they normally can’t. The event can be skipped using an Enchanted Sundial.

During the event, fishing power is increased, and several new dangerous enemies can spawn when the player fishes.

In addition to regular surface enemies, the following enemies will spawn:

DeathweedDeathweed blooms during a Blood Moon.

Some regular Critters will turn Corrupt/Crimson when a Blood Moon rises.

All water in the world (aside from the Ocean, Fish Bowls, and Water Fountains), including rain, gain a blood red color, similar to the Crimson’s natural water color.

BiomeBannerGoblinArmy.png

Goblin Army Icon.png A goblin army has arrived!

The Goblin Army is an event where unique Goblin enemies spawn in waves. When a Goblin Army is approaching, one of the two following status messages will appear: “A goblin army is approaching from the west!” / ”A goblin army is approaching from the east!”

During the event, five (Desktop, Console, and Mobile versions six during Hardmode) different types of goblins will spawn:

Although they do not appear in the Goblin Army, Goblin Scouts can be found rarely on the outer thirds of the map. They drop Tattered Cloth which is used to craft the Goblin Battle Standard, the summoning item for this event.

The event is completed after a certain number of goblins have been defeated. Afterwards, the Goblin TinkererGoblin Tinkerer NPC can be found underground.

Slime Rain Desktop, Console, and Mobile versionsBiomeBannerSlimeRain.png

Slime is falling from the sky!

Occurs when a player has over 140 health and 8 defense, except in Expert ModeDesktop, Console, and Mobile versions, where it can occur with a significantly decreased chance before meeting the criteria.

Slime Rain is an event where different variations of slimes constantly fall from the sky until the day or night is over. If the player kills 150 slimes before the event ends naturally, King Slime will spawn, 75 slimes if King Slime was previously defeated.

Many types of slimes spawn, including:

After King Slime is defeated, the event will stop immediately.

Old One’s Army Desktop, Console, and Mobile versionsBiomeBannerOldOne'sArmy.png

Old One's Army Icon.png The old one’s army is approaching!

The Old One’s Army is a unique Dungeon Defenders 2 crossover event that can be initiated after rescuing the Tavernkeep, who can be found on any layer after defeating the Eater of Worlds/Brain of Cthulhu. The objective is to protect the Eternia Crystal from waves of enemies seeking to destroy it. If the Crystal is destroyed by enemies, the event terminates. If it is kept safe until all waves are cleared, the event is won.

Both the Crystal and its Stand are purchased from the Tavernkeep NPC for coins. Players are inflicted with the Creative Shock debuff for the duration of the event, which prevents the removal or placement of blocks during the entire event within a certain range.

Each wave becomes progressively more difficult. If triggered before any Mechanical Bosses have been defeated, the event consists of 5 waves. If triggered after at least one Mechanical Boss is defeated, the event consists of 7 waves. Once Golem has been defeated, the event becomes even more difficult with the boss Betsy spawning in the final wave. Only one Betsy will spawn during each invasion and defeating it will complete the event. The event also contains 2 mini-bosses, the Ogre and the Dark Mage.

The following enemies are exclusive to the event:

The Torch God Desktop and Mobile versionsBiomeBannerTorchGod.png

Initiated when around 100 torches accumulate in close proximity anywhere below the Surface layer.

The Torch God is a mini-event that happens when 100 torches accumulate in close proximity underground. The placed torches begin launching small fireballs at the player, extinguishing themselves in the process. The fireballs deal 40 / 80 / 120 damage, and they travel in straight lines through blocks. They can also spawn from torches located off-screen.

While the event is active, the player is inflicted with the Blackout debuff, significantly reducing the player’s light vision.

When all torches are extinguished, the event ends. After a brief period, the torches reignite, and if 100 or more torches have been activated, the Torch God’s Favor drops near the torches. The player can not challenge the event again once the player has a Torch God’s Favor either in their inventory or consumed, and must create another character to do so. A player that has not consumed a Torch God’s Favor can continuously challenge and complete the event and obtain more Torch God’s Favors, as long as they do not have one in their inventory.

BiomeBannerFrostLegion.png

Frost Legion Icon.png The Frost Legion has arrived!

The Frost Legion is an event that functions similarly to the Goblin Army, but it requires an item to start the event, which is only attainable in Hardmode. During Christmas, enemies will drop presents. If the world is in Hardmode, these presents have a 1 in 13 chance of containing a Snow Globe, which is used to spawn the Frost Legion.

During the event, three different types of unique snowmen will spawn:

All of the snowmen drop Snow Blocks, technically granting the player a way to obtain infinite amounts of Snow.

The event is completed after a certain number of snowmen have been defeated. Afterward, the Santa Claus NPC will spawn during Christmas.

BiomeBannerSolarEclipse.png

A solar eclipse is happening!

Occurs with a 1/20 chance each day upon dawn, as soon as any Mechanical Boss has been defeated, or when manually summoned with a Solar TabletSolar TabletDesktop, Console, and Mobile versions.

The Solar Eclipse is a Hardmode event where the sun will rise, obscured by the moon, dramatically reducing natural light to a level darker than nighttime. Normal biome enemy spawns are replaced with special enemies that can spawn near NPCs, much more frequently and in greater numbers than usual. On the Desktop version Desktop version, Console version Console version, and Mobile version Mobile version, it can be skipped using an Enchanted Sundial.

During the event, the following enemies will spawn:

After all three Mechanical Bosses have been defeated:

After Plantera has been defeated:

A Solar Eclipse is always terminated upon dusk.

BiomeBannerPumpkinMoon.png

The Pumpkin Moon is a Halloween-themed event where, unlike most other events, the Pumpkin Moon takes place in distinct waves. There are 15 waves in total, which grow harder as the night wears on, culminating in the “Final Wave”, which lasts for the remainder of the night. The Pumpkin Moon can be skipped using an Enchanted SundialDesktop, Console, and Mobile versions.

The Pumpkin Moon has seven unique enemies, in increasing order of difficulty:

Although there are no rewards for surviving the event, besides an Achievement, the enemies can drop unique items, including Spooky Wood and equipment like the Spooky Hook and Raven Staff.

BiomeBannerFrostMoon.png

The Frost Moon is a Christmas-themed event, using the same wave system as the Pumpkin Moon. The Frost Moon also has an additional five “bonus waves” after the “Final Wave”, increasing the wave maximum to 20. Enemies have similar behavior to Pumpkin Moon counterparts, but are tougher, making this event the hardest on the Old-gen console version Old-gen console version and 3DS3DS version version. The Frost Moon can be skipped using an Enchanted SundialDesktop, Console, and Mobile versions.

The Frost Moon has 11 unique enemies:

Although there are no rewards for surviving the event, besides an Achievement, the enemies can drop unique items.

Martian Madness Desktop, Console, and Mobile versionsBiomeBannerMartianMadness.png

Martian Madness Icon.png Martians are invading!

Initiated by letting a Martian ProbeMartian Probe escape from view after detecting a player.

The Martian Madness event is a post-Golem event with an alien invasion theme. It is unique from the others in that in order to start it, it is required to encounter a Martian Probe randomly in the outer parts of the surface and space levels of the world and move into its light. Once the probe detects the player, it needs to leave the screen without being destroyed.

When triggered UFOs start flying in the background.

The Martian Madness event features 11 unique enemies:

The event is completed after a certain number of Martians have been defeated.

Lunar Events Desktop, Console, and Mobile versionsBiomeBannerLunarEvent.png

Celestial creatures are invading!

The Lunar Events is a unique type of event that spawns four different pillars, the Celestial Pillars, spread evenly across the world. While in the proximity of a pillar, respectively-themed enemies spawn. There are four different pillars: the Solar Pillar, the Vortex Pillar, the Nebula Pillar, and the Stardust Pillar. Initially, all pillars are surrounded by a protective barrier. In order to damage and eventually defeat a pillar, a certain number of enemies related to said pillar needs to be defeated.

There are numerous unique enemies in this event:

Solar Pillar

Solar Pillar

Vortex Pillar

Vortex Pillar

Nebula Pillar

Nebula Pillar

Stardust Pillar

Stardust Pillar

After defeating all four pillars, the Moon Lord will spawn. The event is completed once the Moon Lord is defeated or the player dies during the battle.

Achievement Sticky Situation.png Sticky Situation • “Survive the slime rain, where gelatinous organisms fall from the sky in droves.”Achievement Bloodbath.png Bloodbath • “Survive a blood moon, a nocturnal event where the rivers run red and monsters swarm aplenty.”Achievement Goblin Punter.png Goblin Punter • “Triumph over a goblin invasion, a ragtag regiment of crude, barbaric, pointy-eared warriors and their shadowflame sorcerers.”Achievement Walk the Plank.png Walk the Plank • “Triumph over a pirate invasion, a group of pillagers from the sea out for your booty… and your life!”Achievement Do You Want to Slay a Snowman.pngAchievement Kill the Sun.png Kill the Sun • “Survive a solar eclipse, a day darker than night filled with creatures of horror.”Achievement Baleful Harvest.png Baleful Harvest • “Reach the 15th wave of a pumpkin moon, where evil lurks among the autumn harvest.”Achievement Ice Scream.png Ice Scream • “Reach the 15th wave of a frost moon, where the festive season quickly degrades into madness.”Achievement Tin-Foil Hatter.png Tin-Foil Hatter • “Triumph over a martian invasion, when beings from out of this world come to scramble your brains and probe you in uncomfortable places.”Achievement Star Destroyer.png Star Destroyer • “Defeat the four celestial towers of the moon.”

  • Desktop 1.3.0.1: Martian Madness, Slime Rain, and Lunar Events added. Invasion Events now have a progress bar, showing how far along the player is towards completion. Event enemies now run away when the event is over.
  • Desktop 1.2.4: Fixed bug where spawn rates would increase underground when a moon event is happening. Invasion summon items will no longer be consumed if no invasion would happen using it.
  • Desktop 1.2.3: Invasions can now spawn enemies anywhere near friendly NPC instead of just the middle of the world.
  • Desktop 1.2: Solar Eclipse, Rain, and Pirate Invasion events added.
  • Switch 1.0.711.6: Introduced Goblin Army, Blood Moon, Frost Legion, Solar Eclipse, Rain, Pirate Invasion, Martian Madness, Slime Rain, and Lunar Events.
  • Mobile 1.3.0.7: Introduced Slime Rain, Martian Madness, and Lunar Events.
  • 3DS-Release: Introduced Goblin Army, Blood Moon, Frost Legion, Solar Eclipse, Rain, Pirate Invasion, and Pumpkin Moon.

Random Events

Summonable Events

Set Events

Common Enemies

Uncommon Enemies

Common Enemies

Uncommon Enemies



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