> For the complete documentation index, see [llms.txt](https://kof-arena.gitbook.io/the-king-of-fighters-arena/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kof-arena.gitbook.io/the-king-of-fighters-arena/gamefi/controller-boxes-reveal.md). # Controller Boxes Reveal ### Controller Box NFT Purchase * A purchased Controller Box NFT can’t be used directly in the game, it must first undergo a process named ‘Reveal.’ * The reveal process is done exclusively in the MARBLEX NFT marketplace. ### Controller Box NFT Reveal * In the MARBLEX NFT marketplace, tap the ‘Reveal’ button to check the NFT you purchased. * Some Mystery Box NFTs have a set period to be revealed. Reveal is not possible before that set period. * Mystery Box NFTs that display a deadline are automatically revealed after a certain period of time without requiring any additional action. * If you have a block, penalty, or restriction history with MARBLEX Wallets, you may be restricted from revealing NFTs. ### Using a Controller Box * Revealing your Controller Box in the Marketplace can earn you a unique designed Controller. Once a Controller is revealed, it can be used in the game. ### Controller Box NFT Reveal Steps