The official Steam app for mobile Windows devices provides authentication, trade, and community features to secure and enhance your Steam experience. You'll be able to: - Ensure the security of your account with Steam Guard multifactor authentication; - Send and confirm trades with friends; - Sell your in-game items in the Steam Community Market straight from your Inventory; - Browse the Steam storefront and keep up with the latest games, promotions, and sales; - Remotely download and install your games straight to your PC at home.