Amazon Instant Access (formerly Game Connect) lets you link your game or software account to Amazon.com. You can then directly deliver your purchase (add-on content, points, game objects, in-game currency, etc.) to your account.
To link your account using Amazon Instant Access:
Tip: To find eligible titles, look for "[Instant Access]," "PC Instant Access," or "Free-to-play" on search or detail pages in the Digital Games and Digital Software stores. You'll also see a prompt to link your game or software account for all Instant Access titles.
You can find and manage your linked accounts in Your Games & Software Library.
Note: Amazon will not collect your game or software account password, or share any information with the publisher, including your username, password, payment information, address, or telephone number.