Can I use Kinguin Extension in Steam, EA, and Epic Game Store launchers? Kinguin Support Team November 18, 2022 12:52 Updated No, the Kinguin Extension can be used only on the websites. Related articles How to add Kinguin Extension to my browser? Does the extension use my personal data? What is this extension for? Which websites are supported? How do I use the Steam wishlist sync? Comments 0 comments Article is closed for comments.