Why is this game missing from my library? I have activated a retail steam key in the past, but now it's missing.

Steam overlay not available. Absolutely no options whatsoever. Game runs in a window a little less than the height of my 1920x1080 desktop, and about a third of the width (mobile phone/tablet kind of size window as seen in screenshots). Can't redefine keys. Keys are: cursors to move left right up down 1 2 use item m map space pickup esc exit any screen q return to title more info to follow...

Uses the same character models as Quest of Dungeons. Think about changing them guys. Thanks.

Is this a phone-game ? Because the shape looks like it... Yet, I can't find it in the stores (Play/itunes)

Anyone knows which dungeons have the artifacts?