You can use the SteamDB Free Packages tool and a browser extension to mass-activate thousands of free-to-play games and DLCs simultaneously.
Developers often create Steam Bundles that allow you to buy entire franchises or publisher catalogs at a set discount. Mass activate free Steam Games | SteamDB Free Packages tool buy all of steam
According to tracking from Steam.seewang.me , the cost to purchase every game on the platform fluctuates based on active sales: ~$1,385,598.50 Discounted Price: ~$1,337,311.32 Practical Challenges & Solutions You can use the SteamDB Free Packages tool
Note that Steam’s terms of service clarify you are purchasing a license to play games, not permanent ownership of the software itself. How to Manage Large-Scale Acquisitions Total Cost to Buy Everything You cannot add
Steam Support generally does not offer a "buy all" package for standard consumers.
Buying every item on Steam is a massive undertaking that currently costs . While there is no official "buy all" button, you can track the total price and manage large purchases through specific community tools and Steam features. Total Cost to Buy Everything
You cannot add the entire Steam library to a single cart at once.