Indiegala Feudalife Challenges - Steam Keys That Cannot Be Activated (Duplicate, DLC, Invalid)

This video is about keys that cannot be activated, plus some tips.

0:00 Intro
0:33 1. Duplicate Keys
0:56 How to install & use SteamDB extension
1:16 2. Please first activate the main game (DLCs)
1:44 3. Invalid Keys
2:14 Outro

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