Currency

The King of Fighters ARENA has currencies for trades and in-app purchases.

Each currency can be used for fighter upgrades, product purchases, and/or currency exchange comissions.

Currency Type	Name	Descriptions
In-game Currency	FM (Fight Money)	Obtain FM by playing matches with a Controller connected. Used for Fighter Mastery upgrade, Controller Level Up, Durability Fix, Socket Unlock, and Minting. Can be exchanged for FCT (Fighters' Club Token) * Black Diamonds are required for the exchange.
In-game Currency	Diamond	Used for Fighter Cartridge Summons and Package purchases in the Shop. Can be exchanged for Mystic Cubes, which are used for Mastery upgrades.
In-game Currency	Black Diamond	FM can be used to exchange for Black Diamonds in the Black Diamond Exchange Shop. Used as a fee when exchanging FM to FCT. Can also be used for leveling up Controllers immediately, opening Mystery Boxes immediately, and Minting Controllers.
In-game Currency	Mystic Cube	Diamonds can be used to exchange for Mystic Cubes at the Mystic Cube Exchange Shop. Used for Fighter Mastery, Team Mastery, and Account Gem upgrades.
Currency for Exchange	FCT (Fighters' Club Token)	A bridge currency in between FM (Fight Money) and MBX, which is used to regulate the trade circulation. Can be earned from shares of the Fighter Cards, as well.
Currency for Exchange	MBX (MARBLEX)	A growing Cryptocurrency the MBX Corporation is currently servicing.

※ This Guide was written based on the test environment and may be subject to change in the future.