Steam is a video game digital distribution service by Valve. It was launched as a standalone software client in September 2003 as a way for Valve to provide automatic updates for their games, and expanded to include games from third-party publishers.
A Steam card is a gift card that can be redeemed through Steam for credit. Credit from Steam cards can be used to buy games, downloadable content, and in-game content.
Steam gift cards work the same as usual gift cards, and you can redeem it by placing the code into your Steam account. The amount for which you purchased the gift card will be added to your wallet, and you can then activate games, download software and other products from the Steam account.Steam Gift Cards and Wallet Codes work just like gift certificates, which can be redeemed on Steam for the purchase of games, software, and any other item you can purchase on Steam. You can find Steam Gift Cards and Wallet Codes at retail stores across the world in a variety of denominations.