Coins

Coins are Terraria's main unit of currency. They are primarily used for NPC transactions, but can also be used as ammunition for the Coin Gun. There are currently 4 types of coins: Copper Coins, Silver Coins, Gold Coins, and Platinum Coins.

Coins can be obtained by killing enemies, interacting with NPCs, or finding them in multiple forms of loot. Despite coins appearing as the materials "Copper", "Silver", "Gold", or "Platinum", they are unrelated to their respective ore types and cannot be crafted from them.

The coin value an enemy drops upon death is calculated from fixed values in the game code, with some random variation.


 * On the, Platinum Coins have a version exclusive sprite: [[File:Platinum Coin (mobile).png]]

Storage
Inside the player's inventory, coins have their own special slots, although it is possible to move them into normal inventory slots.
 * Coins picked up from the environment, or "shift-clicked" from a storage item, will automatically combine into their higher denominations, if possible.
 * For example, if the player picks up, they will end up with in their inventory instead.
 * Similarly, a player holding and picking up another 15, will end up with.
 * Using "Quick Stack" on an open Piggy Bank, Safe or (collectively, a "bank"), gives special behavior: If there is already at least one coin (of any value) in the bank, all coins in the player's main inventory and coin slots will be moved to the bank. All coins moved, and all coin stacks in the bank, will be combined into the highest possible denominations and minimum number of stacks.
 * Using "Quick Stack To Nearby Chests" will not send coins to nearby banks, even if they already contain the same denomination.
 * Using "Quick Stack" (or "Quick Stack To Nearby Chests") on a Chest (or any other storage item) will treat coins like any other item, and will not move coins from the player's coin slots.
 * However, coins do not auto-combine when manually moved into a storage item; if there is no room in the storage item, some will be left in the player's hand or coin slots. Stacks of 100 coins should then be manually crafted into the next denomination. (See also the warning below regarding Deposit All.)
 * In the early game, before receiving the Piggy Bank, it may be inevitable to store your coins in a Chest. Deposit All does place coins, but if the Chest is already full when you press Deposit All, higher denominations may be destroyed if a stack for that coin does not exist.
 * Coins may be spent in NPC transactions directly from the player's Piggy Bank, Safe, and.

Drops Upon Death

 * Upon a player's death in Softcore (the default mode), half of all of the stacks of coins in a player's inventory are dropped, rounded up to the nearest whole coin. For example, if the player possesses in one stack, it will be dropped. If it is instead,  will be dropped.
 * Upon player death in Mediumcore or Hardcore, all coins are dropped, regardless of how the player died.
 * Being killed by a player-wielded weapon will not cause the player to drop any coins in Softcore, even if recently damaged by an enemy.
 * Forms of accidental death, such as fall damage or Chaos State, will cause coins to drop.
 * Dying from the player's own projectile after having it reflected by an enemy (such as a ) will also result in coins being dropped.
 * In Expert mode, enemies can pick up coins dropped by enemies or players. Coins are often lost permanently on death, as enemies who pick up dead players' coins will usually despawn once off-screen. Enemies holding dropped coins emit a sparkle effect based on the color of the best coin they are holding.
 * In Expert mode, Softcore players drop 75% of their coins upon death instead of 50%.

Trivia

 * Copper, Silver, and Gold Coins are the only items that can have a max stack of 100.
 * Coin Portals often spawn in the Underworld due to the large amount of pots.
 * Due to the transaction properties of portable storage, the maximum amount of money that a player can be considered to be able to spend at one time is exactly 0 on  and 0  on  (40 stacks in Piggy Bank (or ) + 40 in Safe + 40 in  + 54 in inventory, with each stack containing ).
 * Coins have a sell price equal to the amount in their stack, but, unsurprisingly, cannot be sold (on the, Platinum Coins will sometimes show a higher sell price).
 * Coins can be sold on the Wii U and Xbox editions. Doing so will do nothing, however.
 * A Platinum Coin is worth 1,000,000 Copper Coins.
 * Placing all of these Copper Coins would take up over 1/20th of a large world.
 * Purchasing every NPC item requires:
 * 22 Platinum Coin (old).png 81 Gold Coin (old).png 31 Silver Coin (old).png 24 Copper Coin (old).png
 * 23 Platinum Coin (mobile).png 1 Gold Coin (old).png 16 Silver Coin (old).png 59 Copper Coin (old).png
 * Unknown
 * The highest amount of coins a player can drop is in normal mode and  in.
 * Although Coins are considered as ammunition due to being fired by the Coin Gun, they cannot legitimately be placed in the ammunition slot, only in the Coins slot.
 * Coins may be accepted as "payment" in multiplayer.
 * Coins may be accepted as "payment" in multiplayer.

History
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