Hello Adam,
Thank you for posting in Q&A forum.
Windows Thin PC is real. It's a lightweight version of Windows 7 meant to give older PCs a new life as thin clients. It only needs about 16 GB of hard disk space and 1 GB of RAM.
Just a heads-up, it's not made for gaming. Windows Thin PC is designed for environments where PCs are used mainly for remote desktop access and basic apps. Games usually need more resources and storage than it can handle.
Also, keep in mind that Windows Thin PC reached its end of extended support on October 12, 2021.
Reference:
Windows Thin PC - Microsoft Lifecycle | Microsoft Learn
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
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