I know many people do not like this kind of sales.
But I did get some really nice games (and some really bad games too).

Games that I love to have and got from piñata or hats (or similar GOG sales):
Shadow Warrior 2
Owlboy
Homeworld: Emergence
>observer_
Hacknet
Diluvion
Her Story

And I just got Vaporum!
I am so happy!

Maybe not stretch your luck any further...

Did you not get any of those not so good games?

NO WHAMMIES!!!

And just for reference, we do have a running list of what games folks received from their hats:

https://www.gog.com/forum/general/what_mystery_game_did_you_get_from_the_hat/