Term/Category for “Random Click” Games?

I’m trying to find out if there is an industry-standard term for the genre of games where you randomly click around to figure out what to do yet. That is, what category are games like Samorost, Hapland, Tetsuo, and such?

Finding games like Mystery PI or Mystery Case Files is simple enough, just do a search for "HOG (Hidden Object Games)" or "Seek and Find Games", or to find games like DOOM you search for "(First Person) Shooter", but what about these other games? How do you find these without a standard term? Are they called "random-click","click-around","manual-less", "unscripted" or something else?

The term for this is "pixel hunt" although I'd stop short of calling it a genre. It's more a (often considered negative) game design element.

Hidden object and adventure games often employ this element, as do "escape" games.