Warframe, much like all free-to-play games, has a premium currency known as Platinum. Platinum can be used to purchase weapons, Warframes, and other equipment within the game. While you can earn the majority of items in the game by playing, Platinum allows people to shortcut grinds if they want to. There are other items, such as Deluxe Skins, that you can only purchase with the currency.
A little note here, Platinum cannot be used to purchase user-created skins through the Tennogen program. You
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