Eternity Mode/General Changes

Eternity Mode-Only Content: This information applies only to Eternity Mode.

Eternity Mode has a wide number of general changes to the game on top of Expert Mode. This includes adjustments of vanilla mechanics, buffing certain hostile projectiles, rebalancing existing weapons or equipment, as well as a wide variety of quality of life changes.

General

• A Mutant Statue generates near the player's spawn in newly-created worlds.
• Turning on Eternity Mode always activates Expert Mode as well.
• Deviantt spawns when Eternity Mode is activated, gives a starter pack to players, and has new dialogue to provide tips and warnings for the player, lines change with progression.
• Spawn rates are multiplied by 1.1x and max spawns are multiplied by 1.25x.
• All enemies except critters have 10% increased health while a boss isn't alive.
• Bosses prevent normal enemies from spawning while the boss is alive.
• Bosses will drop their summon item when spawned if they have not been defeated yet. This includes Betsy and the Sibling Bosses.
• All bosses will prevent other bosses from naturally spawning, except during a blood moon.
• All mobs drop 40% more coins (this stacks with Expert Mode's x2.5, total x3.5).
• Falling far enough to receive fall damage inflicts Dazed for 2 seconds. Fall damage immunity prevents it entirely.
• Lightning bolts do increased damage and inflict Electrified.
• Water always inflicts Lethargic when submerged unless the player has a buff or accessory that allows them to swim.
• Slimed debuff slows the player and shortens their jump height.
• Shadowflame debuff causes damage over time (which it does not do in vanilla because it cannot normally be inflicted to players).
• Flame Traps and Geysers always inflict On Fire!
• Using the Nurse during a boss fight causes the Recovering debuff, disabling the Nurse for its duration.
• On Fire! wears off faster when the player is above ground and not in front of any background walls during the rain.
• In Masochist Mode, Cacti damage players that walk through them.
• Breaking 2+ Shadow Orbs immediately triggers Goblin Invasion if the player hasn't already defeated Goblins and conditions to start an invasion are satisfied.
• Defeating Goblins for the first time spawns Abominationn to join your NPC town.
• Rain and Sandstorm are disabled until a boss is defeated or Abominationn joins the player's town.
• Blood Moons can't happen before a boss or event have been completed.
• NPCs emit light, before any boss is killed. This can be disabled with a config.

Balance

All weapon stat changes are applied directly to the weapon's base stats. As a result, they are multiplicative with all other modifiers.

• Hallowed armor's Holy Protection triggers the Holy Price debuff, reducing attack speed for 15 seconds after dodging a hit.
• Using the Rod of Discord and Rod of Harmony during boss fights will always damage the player.
• Brain of Confusion dodges reduce damage by 30% for 15 seconds.
• Frozen Turtle Shell and Frozen Shield slightly reduce the player's damage when their ice barrier is active.
• Warmth Potion damage reduction effect halved
• Whips don't benefit from melee speed bonuses, and using multiple whips can no longer apply more than one buff and debuff.
  • Slime Staff 10% increased damage.
  • Imp Staff 10% increased damage.
  • Demon Scythe 60% reduced damage before Brain of Cthulhu or Eater of Worlds is defeated.
• Any spears that don't have any special properties now wobble when swung, similar to the Ghastly Glaive's animation. Additionally, some spears have additional effects:
  • Obsidian Swordfish 20% reduced damage
  • Cobalt Naginata causes a small explosion on striking enemies that deals half the damage of the initial hit.
  • Palladium Pike grants Rapid Healing after striking an enemy.
  • Mythril Halberd will deal triple damage after not attacking for 2 seconds.
  • Orichalcum Halberd shoots two flower petals that deal a third of the weapon's damage.
  • Adamantite Glaive and Titanium Trident 15% increased damage
  • Gungnir 25% increased damage and speed
• Some swords have additional effects.
  • Cobalt Sword 50% increased speed, causes a small explosion on striking enemies that deals half the damage of the initial hit.
  • Palladium Sword 50% increased speed, grants Rapid Healing after striking an enemy.
  • Mythril Sword 50% increased speed, will deal triple damage after not attacking for 2 seconds.
  • Orichalcum Sword 50% increased speed, shoots two flower petals that deal a third of the weapon's damage.
  • Adamantite Sword and Titanium Sword 35% increased damage and speed.
  • Excalibur 25% increased damage and speed.
• Star Cannon 45% reduced damage.
• Water Bolt cannot be used until Skeletron is defeated, shooting a harmless stream of water instead.
• Space Gun cannot be used until Brain of Cthulhu or Eater of Worlds is defeated, shooting confetti instead.
• Magic Dagger 50% reduced damage in pre-hardmode.
• Gray Zapinator and Orange Zapinator cannot stack damage multipliers.
• Coin Gun damage of coins adjusted:
  • Copper Coin 60% increased damage
  • Silver Coin 10% reduced damage
  • Gold Coin 53% reduced damage
  • Platinum Coin 72.5% reduced damage
• Shroomerang 20% increased damage
• Fetid Baghnakhs 25% reduced swing speed.
• Uzi 12% reduced damage.
• Super Star Shooter pierce reduced to 7.
• Blizzard Staff 30% reduced damage and speed.
• Candy Corn Rifle 50% increased damage.
• Stake Launcher 30% increased damage.
• Vampire Knives reduced lifesteal rate when above 50% health.
• Razorpine 20% reduced damage.
• Flying Dragon 30% reduced damage.
• Starlight x0.40 damage when used with Tungsten Enchantment
• Rainbow Crystal Staff 40% reduced damage.
• Lunar Portal Staff 50% reduced damage.
• Zenith hit rate reduced and increases as you progress.

Biome Debuffs

Many biomes in the game inflict debuffs onto the player:

• Lingering flames spawn during Torch God.

• Rain inflicts Wet when the player isn't in front of a background wall or holding an umbrella.
• Snow biome inflicts Hypothermia during snowstorms if the player is not in front of a background wall and its water eventually inflicts Frozen.
• Water in the Jungle inflicts Poisoned.
• Space causes the player to gradually lose breath and then inflicts Suffocation. This can be prevented with the Mystic Skull (in 1.4 only) as well as by using any water breathing item or accessory in combination with the Fish Bowl
• . The Underworld inflicts On Fire! This can be prevented with an Obsidian Skull, Obsidian Skin Potion, or Lava Charm.
• Touching cobwebs in a Spider Nest inflicts Webbed.
• The Corruption inflicts Darkness. Its water and cacti inflict Cursed Inferno.
• The Crimson inflicts Bleeding. Its water and cacti inflict Ichor.
• Underground Hallow inflicts Flipped. Its water and cacti inflict Confused. In 1.4 its water additionally inflicts smite.
• Blood Moon inflicts Water Candle.
• Jungle Temple inflicts Lihzahrd Curse, preventing the player from using any wire-related items or destroying any traps. This debuff is not prevented by Pure Heart, but can be removed by reaching the Lihzahrd Altar, which grants Lihzahrd Blessing.

Biome debuffs can be collectively prevented by equipping the Pure Heart. Debuffs caused by entering water can be prevented with Mutant Antibodies. Debuffs caused by cactus damage can be prevented with Sands of Time. In particular, the Flipped debuff applied by the underground Hallow can also be resisted with a Gravitation Potion, which prevents Flipped's effects from applying (though the debuff itself is still given to the player).