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=528840" 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|
|127116||Steam Sub 127116||CD Key||September 9, 2016 – 18:53:02 UTC|
|127117||Steam Sub 127117||CD Key||September 9, 2016 – 18:53:02 UTC|
|127118||Steam Sub 127118||Store or CD Key||September 9, 2016 – 18:53:02 UTC|