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Smash Coins are special types of coins found in Super Smash Bros. Melee, Super Smash Bros. Brawl, and Super Smash Bros. for Nintendo 3DS / Wii U. They appear primarily in special matches known as Coin Battles. Players deal damage to each other, earning Smash Coins that fly out of the struck opponents in the process; players will only lose coins if they are KO'd. The amount of damage and knockback the move deals determines the amount and type of coins produced, which can be bronze, silver, gold, bills (from Brawl onward), or any mixture thereof. If a player KO'd on the side blast lines of the stage, the player drops some of their coins on the stage, which opponents and teammates can collect. If the player is KO'd or KO'd on the top or bottom blast line, no coins can be snatched, although in Super Smash Bros. Melee, coins appear if the player is Star KO'd or hits the screen.
In Super Smash Bros. Melee, gold Smash Coins are worth ten, silver are worth five, and bronze are worth one. Whenever a player gets KO'ed, they lose half of their coins (rounded down). The player or team with the most Smash Coins when time runs out wins. If a tie occurs, then it will go to Sudden Death.
Smash Coins reappear in the Coin Battle mode for Super Smash Bros. Brawl, which adds Smash Bills to the mix. The values of the Smash Coins are different in this game: Gold coins are worth six Smash Coins, silver coins are worth three, and bronze coins are worth one, while the Smash Bills are worth ten Smash Coins each. If KO'd, players lose half their coins as in 'Melee, but only up to a maximum of 100.
Coin Battle returns only in Super Smash Bros. for Wii U, with the coins and bills serving the same purpose as they did in previous games. In the PAL version of Super Smash Bros. for Nintendo 3DS, however, the trophy description for the gold earned in various modes of the game refers to them as "Smash Coins", despite both serving different functions.
Super Smash Bros. Melee
Super Smash Bros. Brawl
Super Smash Bros. for Wii U