Give the gift of Google Play or use Google Play vouchers towards your own purchases. Google Play Gift Cards can be used to purchase your favorite digital entertainment. Choose from millions of books, apps, movies, music and more in the Google Play store. They come in $10, $15, $25, $50 and $100 denominations.
It's nice to know just how to apply the balance from a card to your Google account. Once you get them, adding the balance is easy.  

Nintendo eShop cards are great for expanding your gaming and entertainment experience. Whether you are sitting at home in front of the Wii or on the go playing a 3DS, game cards can be used to purchase and download new content. Because these cards are delivered by email, there is no need to wait on shipping and no risk of losing the card. These cards are completely hassle-free.
They come in $10, $20, $35, $50 denominations. 

EA Game Cards, are an alternative way to pay for your games from EA similar to a gift card. Redeem your code, spend your funds and get some great games on Origin. Origin is EA's gaming service for buying and playing amazing games. Chat with friends, broadcast your gameplay and get exclusive deals and bonus content. Give as gifts or treat yourself.   
They come in $5, $10, $20, $35, $50, $100 denominations.