NPC happiness

NPC happiness calculator and town planner (1.4.5)

The NPC happiness calculator gives the exact shop price multiplier, from 0.75× to 1.50×, for any of the 26 town NPCs with happiness in Terraria 1.4.5, from the biome they live in and the neighbours within 25 tiles. Loved biomes and neighbours count ×0.88, liked ×0.94, disliked ×1.06, hated ×1.12; living with two or fewer neighbours adds ×0.95 and each neighbour past three adds ×1.05. Since 1.4.5, happiness no longer decides whether an NPC sells a pylon: any vendor with another NPC nearby sells the pylon of the biome you stand in.

Our best full-town layout

Average price multiplier 0.833× across all 26 NPCs, from our deterministic search over towns of two to four NPCs. Load it into the planner with “Auto-plan”.

Town biome	NPCs (price)	Pylon
Jungle	Dryad 0.84× Painter 0.79× Witch Doctor 0.84×	Jungle Pylon
Forest	Clothier 0.84× Guide 0.84× Truffle 0.89×	Forest Pylon
Snow	Goblin Tinkerer 0.84× Mechanic 0.79× Santa Claus 0.84×	Snow Pylon
Ocean	Angler 0.89× Pirate 0.79×	Ocean Pylon
Underground / Cavern / Underworld	Demolitionist 0.79× Tavernkeep 0.84×	Cavern Pylon
Ocean	Cyborg 0.84× Steampunker 0.84× Stylist 0.89×	Ocean Pylon
Forest	Golfer 0.88× Party Girl 0.77× Wizard 0.88× Zoologist 0.88×	Forest Pylon
Desert	Arms Dealer 0.79× Dye Trader 0.84× Nurse 0.84×	Desert Pylon
Forest	Merchant 0.89× Princess 0.75× Tax Collector 0.79×	Forest Pylon

The happiness rules in 1.4.5

What counts	Price factor
Solitude: two or fewer NPCs within 25 tiles and three or fewer between 25 and 120 tiles	×0.95
Crowded: each NPC beyond three within 25 tiles	×1.05
Lives in a loved / liked biome	×0.88 / ×0.94
Lives in a disliked / hated biome	×1.06 / ×1.12
Each loved / liked neighbour within 25 tiles	×0.88 / ×0.94
Each disliked / hated neighbour within 25 tiles	×1.06 / ×1.12
Lovestruck buff (Love Potion)	×0.90
Homeless, more than 120 tiles from home, or in the Corruption, Crimson or Dungeon	×1.50 (maximum)

The factors multiply, then the result is capped between ×0.75 and ×1.50 and rounded to the nearest 1%. Biome checks use the biome where you stand when you talk to the NPC. The Princess has no favourite biome and loves up to three nearby NPCs, but she gets the maximum price if fewer than two NPCs live near her; every other NPC likes having her as a neighbour.

Pylons in 1.4.5

Version 1.4.5 removed the happiness requirement for pylons and added the Underworld and Aether Pylons. A vendor NPC sells the pylon for the biome you are standing in when another NPC lives nearby and you are not in the Corruption or Crimson. The Guide, Nurse, Angler, Tax Collector and Tavernkeep do not sell pylons (the Tavernkeep stopped in 1.4.5.4). The Aether Pylon is not sold at all: you get it by putting any other pylon into Shimmer.

Full preference chart

NPC	Likes biome	Dislikes biome	Likes NPCs	Dislikes NPCs	Best
Guide	Forest	Ocean			0.78×
Merchant	Forest	Desert			0.78×
Nurse	Hallow	Snow			0.75×
Demolitionist	Underground	Ocean			0.75×
Dye Trader	Desert	Forest			0.78×
Angler	Ocean	Desert			0.78×
Zoologist	Forest	Desert			0.75×
Dryad	Jungle	Desert			0.78×
Painter	Jungle	Forest			0.75×
Golfer	Forest	Underground			0.75×
Arms Dealer	Desert	Snow			0.75×
Tavernkeep	Hallow	Snow			0.75×
Stylist	Ocean	Snow			0.75×
Goblin Tinkerer	Underground	Jungle			0.75×
Witch Doctor	Jungle	Hallow			0.78×
Clothier	Underground	Hallow			0.75×
Mechanic	Snow	Underground			0.75×
Party Girl	Hallow	Underground			0.75×
Wizard	Hallow	Ocean			0.75×
Tax Collector	Snow	Hallow			0.75×
Truffle	Glowing Mushroom	—			0.75×
Pirate	Ocean	Underground			0.75×
Steampunker	Desert	Jungle			0.75×
Cyborg	Snow	Jungle			0.78×
Santa Claus	Snow	Desert	—		0.79×
Princess	—	—	Up to 3 nearby NPCs	—	0.75×

Green = loves, red = hates (bold), plain = likes or dislikes; hover a head for the name. Every NPC also likes the Princess. “Best” is the lowest multiplier the NPC can reach without buffs (our search over every biome and up to three neighbours).

Questions players ask

Does NPC happiness matter in Terraria?

Yes, for prices: a happy NPC sells for as little as 0.75× the normal price and pays you more for your items; an unhappy one charges up to 1.50×. In 1.4.5 it no longer decides pylons.

What does NPC happiness do in Terraria?

It sets the NPC's shop prices (buying and selling). In older versions it also unlocked pylons; since 1.4.5 any vendor with a neighbour sells them.

How do I increase NPC happiness?

Move the NPC to a biome it likes, put one or two liked neighbours within 25 tiles, keep fewer than four NPCs that close, and keep disliked NPCs out of range. The calculator shows the two best moves.

How do I check NPC happiness in game?

Talk to the NPC and choose Happiness; 1.4.5 also shows a price indicator next to the shop.

Did 1.4.5 change NPC happiness?

The price rules are the same. 1.4.5 removed the happiness requirement for pylons, added the Underworld and Aether Pylons, and the Lovestruck buff now also lowers prices.

Data: Terraria 1.4.5 facts from the Terraria Wiki (terraria.wiki.gg, CC BY-NC-SA 4.0), checked 14 October 2026 against patch 1.4.5.8; 26 NPCs in this chart. Text and tools are our own. Wrong number? Tell us.