GOG Connect is a feature that lets you link your Steam account to your Gog.com account, and every so often they list games that they will "transfer" giving you a Gog copy of the game for free if you own the game on Steam. These promotions are short term, so you need to do the transfer when they pop up or you miss your chance. I figured we might start a thread here about it, and sticky it, so that people can post when they see one of these chances come up.
Seems to be some new stuff on GOG Connect right now.
Darkest Hour: A Heart of Iron Game Inside >Observer_ Outlast Perception Punch Club The Final Station Tahira: Echoes of the Astral Empire Baldur's Gate 1 and 2 Enhanced Editions Limbo Rebel Galaxy Sunless Sea For the Glory: A Europa Universalis Game Homeworld: Deserts of Kharak Homeworld: Remastered Collection Rogue Wizards Sengoku Zombie Night Terror