Does anyone have any information about something called "ValveTestApp91620"
I found it today in my steam library and i have no idea what it is. i tried installing it but it maintained gray(not playable) and yes i did google it: lmgtfy.com/?q=valvetestapp91620
If anyone finds out anything about it please let me know :S

No idea, because I don't have that

EDIT: Just found some information, and it's something to do with Sanctum. It's a manifest of an update, and it's just a bug where they appear randomly in peoples' librarys

Thanks! and i do have that game!