Humble Bundle Check

Check Humble Bundle game pages against your Steam library before you buy. Humble Bundle Check shows which bundle titles you already own, what trusted matched unowned Steam titles are currently worth in your selected Steam store region, and which matched titles are on sale. Matching is conservative by design. If a title cannot be matched confidently, it stays unmatched instead of guessing. Setup requires your own Steam Web API key and SteamID64. These are stored in your browser profile and used to query Steam for your library and current store data. The extension runs on Humble Bundle game bundle pages. Not affiliated with Humble Bundle or Valve.