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=666520" 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|
|189357||Steam Sub 189357||CD Key||June 23, 2017 – 17:15:21 UTC|
|189358||Steam Sub 189358||CD Key||June 23, 2017 – 17:15:21 UTC|
|189359||Steam Sub 189359||Store or CD Key||January 8, 2018 – 21:22:59 UTC|
|189360||Steam Sub 189360||Rental||January 8, 2018 – 21:23:14 UTC|