I don't even have devils playhouse which I bought from humble bundle wtf happened?

So, you can not find it by Steam search anymore. The URL still works but there is no "Install" button, even if you formerly owned the game. In the Steam Library the game can't be downloaded either. Even Using the URL-trick doesn't work anymore (steam://install/XXXXXX) Also validating the already existing files on one of my older computers basically says "0 out of 0 files checked" which means the Steam Servers no longer have any files at all. And if I start the EXE manually I get "Application load error ...

When I try to play the game, it looks like its about to launch but ends up not responding a moment later. All I get when launching is a white screen that covers the upper left portion of my screen.

I was scroling around steam when I came across this game. the page told me that I have the game even though I did not get it

I can install it and everything... Never even heard of it.