Steam allows you to purchase gift cards, but because it's an entirely online store, you have to activate the cards with a code first. Redeeming these codes in the Steam Store will add the monetary ...

Also, have your Wallet code ready. 1. Navigate to the Steam app and log into your account. 2. At the top of the app, tap on Wallet > Redeem a Steam Gift Card or Wallet Code. 3. Enter your Wallet ...