Hello SetoKonowa!
Thank you for your message and for your interest in our games!
Yes, you are correct. 50.05 was part of the first edition of 80.08. When the game left Steam and 80.08 was updated to the current version, we decided to remove 50.05. We are currently thinking about updating 50.05 just like we did with 80.08. Hopefully we can share more news about it in the coming weeks. Consider following us here on Itch to receive news regarding 50.05 and the new games that we will be releasing soon, or visit our website studiocloudscape.com and join our newsletter.
Thanks again!