No clue if this is still a problem. I've seen 3 fixes, immediately below is the most recent. (I remember this game bring disappointing, maybe don't bother with it) Malafax has Dark Void Mar 5, 2022 @ 7:12am IGNORE THE SERIAL KEY ♥♥♥♥♥♥♥♥, JUST COPY AND PASTE PRODUCT CODE THAT STEAM GAVE YOU! #195 Below is another fix from the original post. If your serial key keeps reading as invalid during activation, follow the steps provided by people from this thread. Lostedge has Dark Void No...

Put the game up on GOG. Then it might be able to be preserved and actually appreciated.

https://delistedgames.com/dark-void-titles-flock-to-be-delisted-on-steam-on-may-8th/

I recently bought a physical copy of Dark Void. My intention was to use the key to activate it on Steam, and to my surprise, there was no key on the back of the manual, even though the manual itself says that there should be one. I would like to know if anyone else who owns the physical version has experienced this as well. I’m certain it’s an original copy and that I bought it sealed; however, it’s a Brazilian version (only the manual and the box are translated into pt-BR)....

Some posts say the servers are deactivated, while another says its still active. Has some one gone my route and got the game activated recently? thanks!