This app has been deleted or is hidden to the public. There is extremely limited to no information about this app.
We don't even have a name, hence why we are displaying SteamDB Unknown App "AppID".
If you see someone screenshot a page like this and add some information/images on it, it is most likely fake.
Every change is tracked in history, and can be directly linked to.
<iframe src="https://steamdb.info/embed/?appid=664680" height="389px" width="100%" scrolling="no" frameborder="0"></iframe>
Initializing graph of a week…
Initializing graph of a year…
|SubID||Name||Billing Type||Last Updated|
|188711||Steam Sub 188711||CD Key||June 21, 2017 – 19:18:02 UTC|
|188712||Steam Sub 188712||CD Key||June 21, 2017 – 19:18:02 UTC|
|188713||Steam Sub 188713||Store or CD Key||August 25, 2017 – 17:25:59 UTC|
|188714||Steam Sub 188714||Rental||August 25, 2017 – 17:26:06 UTC|