Frost Moon

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BiomeBannerFrostMoon.png
Not to be confused with the Frost Legion, another summoned event.
Bestiary Frost Moon.png “The Frost Moon is rising...” Bestiary Frost Moon.png
Frost Moon Icon.png
Progress bar icon

The Frost Moon is a Hardmode, post-Plantera, Christmas-themed event summoned with the Naughty Present any time at night, ending at dawn (4:30 AM). It can be summoned any time of year and does not require the actual Christmas season. During the event, unique and highly difficult enemies spawn at high rates and attack the player. It is similar to the Pumpkin Moon event, but is more difficult, and (Old-gen console and 3DS versions)has more waves. Visually, the moon turns into a snowman, though remaining in its current phase.

The entire event consists of 20 waves. Waves progress as the player reaches certain kill scores. After a wave's required score is met, the next wave begins, and the kill score is reset to 0. Status messages will indicate when the wave has advanced, and which wave has been achieved. See the table below for the points awarded for each enemy and the score required for each wave. Expert Mode(Desktop, Console and Mobile versions) worlds will gain a 2× point multiplier and Master Mode(Desktop, Console and Mobile versions) worlds will gain a 2.5× multiplier. On the Desktop version Desktop version, Console version Console version, and Mobile version Mobile version, when the event is over, the total score will be displayed by a status message: "The Frost Moon has passed! (Score: <total score>)"

The Frost Moon event always ends at 4:30 AM. The goal of the event is to progress through all 20 waves before the event ends, although the achievement for the event is awarded at wave 15.

The Naughty Present, which summons the Frost Moon, requires materials only available in Hardmode worlds where the player has already defeated Plantera (although it can still be summoned in pre-Hardmode worlds). As such, it is intended to present a challenge even to players with mid-to-late Hardmode equipment. In the final waves, multiple boss-level enemies are fought at once.

Frost Moon enemies drop powerful weapons and accessories, as well as pet and vanity items. Most drop with extreme rarity, and even players who manage to complete the event will find they need to do so several times before obtaining them. Drop chances for items dropped by bosses increase as waves are completed. In the final wave, the Everscream, Santa-NK1, and Ice Queen are all guaranteed to drop their respective trophies.

(Desktop, Console and Mobile versions) Reaching the 15th wave before 4:30 AM will display the status message "The spirit of Christmas spreads cheer..." at dawn (4:30 AM). For the entire day and night, all special effects of the Christmas season will occur. At 4:30 AM of the next day, the status message "The spirit of Christmas fades..." will appear and all Christmas effects will no longer occur until the Christmas season begins again or the player reaches the 15th wave of the Frost Moon again.[1]

Contents

Characters
Unique Drops
From Zombie Elves:
From Everscream:
From Santa-NK1:
From Ice Queen:
Music

Waves

Points per kill [2]
Enemy Points
Zombie Elf 1 / 2 / 2.5
Gingerbread Man 2 / 4 / 5
Elf Archer 3 / 6 / 7.5
Nutcracker 4 / 8 / 10
Flocko 5 / 10 / 12.5
Elf Copter 8 / 16 / 20
Krampus 10 / 20 / 25
Yeti 18 / 36 / 45
Present Mimic 20 / 40 / 50
Everscream 50 / 100 / 125
Santa-NK1 100 / 200 / 250
Ice Queen 150 / 300 / 375
Wave scores & enemies [3]
Wave Points required Enemies
1 0 Zombie Elf and Gingerbread Man
2 25 Zombie Elf and Elf Archer
3 40 Zombie Elf, Elf Archer, Gingerbread Man, and Nutcracker
4 50 Everscream, Zombie Elf, Elf Archer, and Gingerbread Man
5 80 Everscream, Zombie Elf, Elf Archer, and Nutcracker
6 100 Everscream, Elf Archer, Nutcracker, and Elf Copter
7 160 Santa-NK1, Gingerbread Man, Elf Archer, and Zombie Elf
8 180 Santa-NK1, Elf Copter, Elf Archer, Nutcracker, and Krampus
9 200 Santa-NK1, Everscream, Nutcracker, Elf Copter, and Gingerbread Man
10 250 Santa-NK1, Everscream, Krampus, Zombie Elf, and Elf Copter
11 300 Ice Queen, Flocko, Zombie Elf, and Gingerbread Man
12 375 Ice Queen, Everscream, Gingerbread Man, Yeti, and Zombie Elf
13 450 Ice Queen, Santa-NK1, Elf Copter, Gingerbread Man, and Flocko
14 525 Ice Queen, Santa-NK1, Everscream, Yeti, and Krampus
15 675 Ice Queen, Santa-NK1, Everscream, Yeti, and Elf Copter
16 850 Ice Queen, Santa-NK1, Everscream, Yeti, and Flocko
17 1025 Ice Queen, Santa-NK1, Everscream, Yeti, Krampus, and Elf Copter
18 1325 Ice Queen, Santa-NK1, Everscream, Yeti, Nutcracker, and Krampus
19 1550 Ice Queen, Santa-NK1, Everscream, and Yeti
20 2000 Ice Queen, Santa-NK1, and Everscream
  • Total points required to reach wave 15: 3410, wave 20: 10160
  • Present Mimics may spawn at any wave, instead of wave-appropriate enemies, if there are currently less than four Present Mimics around.
  • The maximum number of bosses at once depends on the wave. While this number is reached (or possibly exceeded, for example if the player manages to somehow reach wave 9 without killing two Everscreams from wave 6), no more of this type of boss will spawn.
Boss spawn limits [4]
Wave Everscream
Everscream		 Santa-NK1
Santa-NK1		 Ice Queen
Ice Queen
4 1 - -
5 1 - -
6 2 - -
7 - 1 -
8 - 1 -
9 1 1 -
10 1 2 -
11 - - 1
12 1 - 1
13 - 1 1
14 1 1 1
15 3 2 1
16 4 2 2
17 5 3 2
18 6 4 3
19 7 5 4
20 Unlimited

Loot

All of the boss-type enemies (Ice Queen, Santa-NK1 and Everscream) have increased chances to drop loot in later waves. This chance starts at 11.11% (20%) in wave 4 (when these enemies first spawn) and grows at a nonlinear rate up to 33.33% by wave 19 (100% by wave 14). The formula is as follows (with [math]\displaystyle{ w }[/math] being the wave number in question):[5]

Classic Mode: [math]\displaystyle{ \cfrac{1}{\max(1, \left \lfloor \cfrac{28 - w}{2.5} \right \rfloor)} }[/math]
Expert Mode: [math]\displaystyle{ \cfrac{1}{\max(1, \left \lfloor \cfrac{23 - w}{2.5} \right \rfloor - 2)} }[/math]

This chance is affected by the luck(Desktop, Console and Mobile versions) of the player closest to the enemy upon its death.[5]

Loot drop factors
Wave Classic Expert

4 11.11% 20%
5 11.11% 20%
6 12.5% 25%
7 12.5% 25%
8 12.5% 25%
9 14.29% 33.33%
10 14.29% 33.33%
11 16.67% 50%
12 16.67% 50%
13 16.67% 50%
14 20% 100%
15 20% 100%
16 25% 100%
17 25% 100%
18 25% 100%
19 33.33% 100%
20 33.33% 100%

Trophies have their own, separate chance to drop (which, on Desktop version Desktop, Console version Console, and Mobile version Mobile, also applies alongside the general drop chance explained above). Starting at wave 15, there is a chance each Ice Queen, Santa-NK1 and Everscream killed will drop its respective trophy. This chance increases at wave 17 and again at wave 19, as shown below. Luck does not affect this chance.[6]

Trophy base drop rates
Wave Classic Expert
15 1/4 (25%) 3/11 (27.27%)
16 1/4 (25%) 3/11 (27.27%)
17 1/3 (33.33%) 3/8 (37.5%)
18 1/3 (33.33%) 3/8 (37.5%)
19+ 1/2 (50%) 3/5 (60%)

The table below displays the drop rates of all items affected by the loot drop factor explained above.

Actual drop rates in each wave
Wave Christmas Hook Christmas Tree Sword Razorpine Festive Wings Chain Gun Elf Melter Baby Grinch's Mischief Whistle Blizzard Staff North Pole Snowman Cannon Reindeer Bells TrophiesTrophiesTrophies RelicsRelicsRelics Shrub Star Toy Tank Frozen Crown
Base 31.11% 31.11% 31.11% 6.67% 50% 50% 6.67% 31.11% 31.11% 31.11% 6.67% n/a 100% 25%

4 3.46%
6.22% 		3.46%
6.22% 		3.46%
6.22% 		0.74%
1.33% 		n/a n/a n/a n/a n/a n/a n/a n/a 20% 5%
5 3.46%
6.22% 		3.46%
6.22% 		3.46%
6.22% 		0.74%
1.33% 		n/a n/a n/a n/a n/a n/a n/a n/a 20% 5%
6 3.89%
7.78% 		3.89%
7.78% 		3.89%
7.78% 		0.83%
1.67% 		n/a n/a n/a n/a n/a n/a n/a n/a 25% 6.25%
7 3.89%
7.78% 		3.89%
7.78% 		3.89%
7.78% 		0.83%
1.67% 		6.25%
12.5% 		6.25%
12.5% 		n/a n/a n/a n/a n/a n/a 25% 6.25%
8 3.89%
7.78% 		3.89%
7.78% 		3.89%
7.78% 		0.83%
1.67% 		6.25%
12.5% 		6.25%
12.5% 		n/a n/a n/a n/a n/a n/a 25% 6.25%
9 4.44%
10.37% 		4.44%
10.37% 		4.44%
10.37% 		0.95%
2.22% 		7.14%
16.67% 		7.14%
16.67% 		n/a n/a n/a n/a n/a n/a 33.33% 8.33%
10 4.44%
10.37% 		4.44%
10.37% 		4.44%
10.37% 		0.95%
2.22% 		7.14%
16.67% 		7.14%
16.67% 		n/a n/a n/a n/a n/a n/a 33.33% 8.33%
11 5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		1.11%
3.33% 		8.33%
25% 		8.33%
25% 		1.11%
3.33% 		5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		n/a n/a 50% 12.5%
12 5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		1.11%
3.33% 		8.33%
25% 		8.33%
25% 		1.11%
3.33% 		5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		n/a n/a 50% 12.5%
13 5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		1.11%
3.33% 		8.33%
25% 		8.33%
25% 		1.11%
3.33% 		5.19%
15.56% 		5.19%
15.56% 		5.19%
15.56% 		n/a n/a 50% 12.5%
14 6.22%
31.11% 		6.22%
31.11% 		6.22%
31.11% 		1.33%
6.67% 		10%
50% 		10%
50% 		1.33%
6.67% 		6.22%
31.11% 		6.22%
31.11% 		6.22%
31.11% 		n/a n/a 100% 25%
15 6.22%
31.11% 		6.22%
31.11% 		6.22%
31.11% 		1.33%
6.67% 		10%
50% 		10%
50% 		1.33%
6.67% 		6.22%
31.11% 		6.22%
31.11% 		6.22%
31.11% 		1.33%
6.67% 		5%
27.27% 		100% 25%
16 7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		12.5%
50% 		12.5%
50% 		1.67%
6.67% 		7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		6.25%
27.27% 		100% 25%
17 7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		12.5%
50% 		12.5%
50% 		1.67%
6.67% 		7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		8.33%
37.5% 		100% 25%
18 7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		12.5%
50% 		12.5%
50% 		1.67%
6.67% 		7.78%
31.11% 		7.78%
31.11% 		7.78%
31.11% 		1.67%
6.67% 		8.33%
37.5% 		100% 25%
19 10.37%
31.11% 		10.37%
31.11% 		10.37%
31.11% 		2.22%
6.67% 		16.67%
50% 		16.67%
50% 		2.22%
6.67% 		10.37%
31.11% 		10.37%
31.11% 		10.37%
31.11% 		2.22%
6.67% 		16.67%
60% 		100% 25%
20 10.37%
31.11% 		10.37%
31.11% 		10.37%
31.11% 		2.22%
6.67% 		16.67%
50% 		16.67%
50% 		2.22%
6.67% 		10.37%
31.11% 		10.37%
31.11% 		10.37%
31.11% 		2.22%
6.67% 		16.67%
60% 		100% 25%

Notes

Frost Moon (moon).png
The moon as it appears during the event.
  • The Frost Moon event will sometimes end after leaving and then reentering the world.
  • Water Candles, Peace Candle, Battle Potions and Calming Potions have no effect during the invasion, as the same with some other events.
  • If the player is killed during the event, the event is not canceled. The player will keep re-spawning and can continue fighting its enemies as the event continues until dawn. In single-player games, exiting the world and reloading it will cancel the event, but it will also delete the items from the ground.
  • The Frost Moon does not stack with the Blood Moon. Summoning the Frost Moon while a Blood Moon is active will result in a regular Frost Moon.
  • Summoning a Pirate Invasion during a Frost Moon will cancel it.
  • Any boss enemies that are still on a player's screen by the time dawn breaks will begin to move rapidly in a single direction, rushing off-screen to despawn. It is still possible to pursue or even kill some bosses while this is occurring.
  • Lingering enemies beaten after the event is over will never drop any rare items.

Achievement

Achievement Ice Scream.png
Ice Scream • “Reach the 15th wave of a frost moon, where the festive season quickly degrades into madness.”
Reach the 15th wave of a Frost Moon. (Desktop, Console and Mobile versions)
Category: Slayer Slayer

Tips

For more elaborate strategies on defeating Frost Moon, including weapon and arena recommendations, see Guide:Frost Moon strategies.
  • Because spawn rates for areas where Frost Moon enemies cannot spawn are also increased, a Frost Moon can be used to farm for other items, e.g., Pirate Maps at the Ocean, while completely avoiding the Frost Moon enemies.
  • The Frost Moon enemies are susceptible to the Ichor debuff, which makes a Flask of Ichor, Ichor Arrows or Bullets, or the Golden Shower very effective.
  • Players should kill the enemies as soon as they spawn to ensure that more enemies can spawn continuously in order to increase the chances of reaching later waves.
  • The Frost Moon can be a great way to obtain a large amount of coins quickly.
  • A good potion to use is the Warmth Potion as it decreases damage significantly from enemies in the event.

Trivia

History

  • Desktop 1.4.4:
    • All regular enemies in Frost Moon now have low per-player Health scaling in Expert/Master multiplayer (the boss units already had scaling).
    • Frost Moon's "expert drop bonus" modifier has been reduced slightly, with the base drop rates being increased by the same amount, and the end result being that Classic mode drops are slightly more generous, while Expert drop rates stay the same.
    • Frost Moon now receives a 2.5x point multiplier when playing in Master mode. Previously, it received a 2x multiplier in Expert, but no additional gain in Master.
    • Frost Moon will now display the total score when the event is over.
    • Fixed Flocko and Krampus not giving wave progression for Frost Moon.
    • Fixed a very old bug where Frost Moon Waves 2, 3, and 4 required way too few points to complete.
  • Desktop 1.4.0.1: Reaching the end of the Frost Moon unlocks one in-game day of Christmas.
  • Desktop 1.2.3:
    • Pumpkin Moon and Frost Moon can now be started when using a Snowman pet.
    • All waves in Frost Moon correctly use "Flocko" in the warning.
    • Flocko & Elf Copter now both correctly run away at dawn.
    • Fixed frost moon wave display text (Elf Zombie to Zombie Elf).

References

  1. ↑ Information taken from the Desktop version Desktop 1.4.2.1 source code, method CheckForMoonEventsStartingTemporarySeasons() in Terraria.Main.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  2. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method CheckProgressFrostMoon() in Terraria.NPC.cs.
  3. ↑ Information taken from the Desktop version Desktop 1.4.2.1 source code, method CheckProgressFrostMoon() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  4. ↑ Information taken from the Desktop version Desktop 1.4.0.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.4.9.
  5. ↑ 5.0 5.1 Information taken from the Desktop version Desktop 1.4.4.9 source code, method RegisterBoss_FrostMoon() in Terraria.GameContent.ItemDropRules.ItemDropDatabase.cs and class FrostMoonDropGatingChance in Terraria.GameContent.ItemDropRules.Conditions.cs.
  6. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method RegisterBoss_FrostMoon() in Terraria.GameContent.ItemDropRules.ItemDropDatabase.cs and class FrostMoonDropGateForTrophies in Terraria.GameContent.ItemDropRules.Conditions.cs.
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