Star Coin

Star Coins are collectibles introduced in the New Super Mario Bros. series. They also appear in Mario and Donkey Kong: Minis on the Move and Mario Golf: World Tour.

New Super Mario Bros.
In New Super Mario Bros., there are three Star Coins in each of the eighty levels for a total of 240 Star Coins. Collecting a Star Coin adds 1,000 points to the player's game score; some Star Coins may be hidden in areas that require power-ups such as the Mini Mushroom or the Blue Shell to access or collect them. Collected Star Coins will show up as translucent on subsequent playthroughs of a level. On the world map, the Touch Screen will display the total amount of Star Coins collected. Star Coins are used to unlock Star Coin Signs on the world map; each sign costs 5 Star Coins to open and allows the player to access Toad Houses or additional levels, which are represented with letters (e.g. World 1-A or World 5-B).

After completing the game at least once, a Blue Toad House will appear north of World 1-1 that sells 5 bonus Touch Screen backgrounds for 20 Star Coins each; the 5th background can be unlocked by opening every Toad House or spending all the Star Coins after collecting them. Collecting all 240 Star Coins will reward the player with a second star next to their save file, and "Complete" will appear on the Touch Screen next to the Star Coin counter; spending all the Star Coins will result in an "All Spent" message appearing next to the Star Coin symbol on the top screen in the world map reading "All Spent".

New Super Mario Bros. Wii
Star Coins also appear in New Super Mario Bros. Wii; there are 231 Star Coins in total, and collecting one adds 4,000 points to the player's total score, instead of 1,000 like in its predecessor. If the player collects all three Star Coins in a level, applause can be heard.

In Super Mario 3D Land, they are replaced by Star Medals, which have a slightly different appearance but essentially the same function. Star Medals were then replaced by Green Stars in Super Mario 3D World, still serving the same purpose.

Although Star Coins do not appear in Super Mario Galaxy 2, very similar items called Comet Medals appear.

Star Coins appear again in New Super Mario Bros. 2. In this game, there are 219 Star Coins in total and they have similar uses to the Star Coins featured in New Super Mario Bros.. In World Star, Moon Coins appear instead.

Star Coins appear once again in New Super Mario Bros. U, where they hold the same purpose as New Super Mario Bros. Wii.

New Super Mario Bros. Wii

 * Uses:
 * One use is for buying hint movies at Peach's Castle.
 * Collecting all Star Coins in a world will unlock a level in World 9 (unlocked after beating the final boss). It will be the level number corresponding to the world number (e.g. collecting the Star Coins in World 1 will unlock 9-1).
 * The final use is to earn one of the five stars on the File Select Screen. This is done by collecting all twenty-four Star Coins in World 9, thus obtaining all the Star Coins in the game.

New Super Mario Bros. 2

 * Uses:
 * Like in the first New Super Mario Bros., the Star Coins are used to open Star Coin Signs, leading to Toad Houses or secret levels.
 * 90 Star Coins are required to unlock the levels in World Star.

New Super Mario Bros. U
Star Coins once again appear in New Super Mario Bros. U. Their purpose is the same as in New Super Mario Bros. Wii, where collecting all the Star Coins in each world unlocks a level in Superstar Road. There are in total 246 Star Coins in the game.

Mario and Donkey Kong: Minis on the Move
Star Coins appear in the minigame Elevation Station in Mario and Donkey Kong: Minis on the Move. Collecting one adds 500 points to the player's score.

Mario Golf: World Tour
Star Coins appear in Mario Golf: World Tour and can be used to unlock new courses and playable characters. Players can earn them by clearing Star Coin challenges. These coins are also seen in the Extra level of the training games, where players are challenged to get the Star Coin with the ball while landing it as close to the pin as possible.

Super Smash Bros. series
In Super Smash Bros. for Nintendo 3DS / Wii U and Super Smash Bros. Ultimate, the coins produced from Mario's and Luigi's up special moves, Super Jump Punch, are Star Coins.

Puzzle & Dragons: Super Mario Bros. Edition
Star Coins appear in Puzzle & Dragons: Super Mario Bros. Edition as special Skill Items that raise the Skill levels of all forms of Mario except the 2.0 update forms, and all types of Hammer Bros., Coin Coffers, Thwomps and Whomps. They can be earned by opening up ? Blocks; winning them from the Lucky ? Blocks game at Toad Houses; randomly dropped by Koopa Troopas and Boom Boom; or from Big Thwomps and Big Whomps with a 10+ Combo attack. Other versions of Star Coins exist: Green Star Coins, Grand Star Coins and Grand Green Star Coins.

Mario & Sonic at the Rio 2016 Olympic Games
Star Coins appear in Golf Plus in the Nintendo 3DS version of Mario & Sonic at the Rio 2016 Olympic Games. In this event, Star Coins are used to score the event and decide the winner, and on most holes are earned by getting the ball into the hole in the fewest shots. They can also be earned by hitting ? Blocks, which will produce a random number of Star Coins that can be scored by reaching the hole in under the number of shots allowed for the hole.

New Super Mario Bros. 2

 * Instruction manual description: "Every course contains three of these. Once collected, they can be used to open new paths on the map screen."

New Super Mario Bros. U

 * Instruction manual description: "Each course contains three Star Coins. If you collect them all, something good might happen!"

Trivia

 * In Yoshi's Safari, the 10-Coins are large, circular coins that have an imprint of a Super Star, predating the Star Coins by 13 years.
 * In New Super Mario Bros., if the player grabs a Star Coin surrounded by coins, the Star Coin sound will cancel out the coin sound and will mute the sound of any other coins for a few seconds. This also occurs when the Star Coin's collect sound is played; grabbing any coins when the Star Coin's collect sound plays will cause the collect sound of a Star Coin to cancel out the coin sound effect.
 * In New Super Mario Bros., the sound effect for obtaining a Star Coin is the Dragon Coin sound effect in Super Mario World: Super Mario Advance 2 and is also labelled as "SE_OBJ_GET_DRAGON_COIN", suggesting that they replaced Dragon Coins in the final game.