Happy friends = A fatter wallet and fast traveling .
Terraria NPC felicity is a nigh invisible stat that influences a smattering of useful feature . The system is surprisingly elaborate and finding it course would ask having plenty of talks with your NPC along with a hatful of test and computer error .
What does NPC happiness do?
NPC happiness has two primary effects :
There are also a few other traits unique to certain special Nonproliferation Center . TheNurse ’s healing prices , Angler ’s quest wages , andTax Collector ’s money gainare all influenced by happiness as well .
The most important feature is the ability to purchasepylons . There is a pylon foreach major biome(aside from Hell , which counts as being part of the Cavern biome , and the Corruption / Crimson ) that can be purchase from NPC shop in that biome . The Glowing Mushroom biome also has a pylon despite being a minor biome by all standards .

you could travel between pose pylons so long as both pylons are near atown , which is a gather of two or more NPCs , and are in their respective biomes . Only one of each eccentric of power pylon may be placed . power pylon are also unusable while a knob is live .
refer : Terraria : How to get NPCs - Pro Game guide
How to raise NPC happiness
NPC happiness is base on thebiome that they ’re inand the NPCs that are living around them . you could stop if an NPC is happy or not and what they ’re happy ( or unhappy ) about by selectingHappinesswhen talking to an NPC .
Each NPC has specific biome that theylove , like , dislike , and detest . They ’ll gain a large amount of felicity for living in biomes they bed and a low amount for a liked biome . Conversely , they ’ll lose happiness in a disliked or hated biome .
The same rule is applied to nearby NPCs . Each NPC has other NPC that they love , like , dislike , and hate . Specifically , an NPC is define asnearbywhen its housing sword lily is within 25 blocks .

There is also an inducement to keep NPC radical small . An NPC becomes less glad when there are more than two nearby NPC . They also encounter a happiness caramel if there are no more than two nearby NPCs and no more than threeotherNPCs within 120 block .
To optimise NPC happiness , you ’ll need to form minuscule towns of like - minded Nonproliferation Center . You ’ll postulate to prioritize which NPCs you want to be happy sincenot every NPC can be at max felicity at the same sentence .
For aid organizing all of the Nonproliferation Center useable in Terraria , go check outHow Many NPC are in Terraria?on Pro Game Guides !