Another shovelful of soil on Telltale Games's grave: GOG.com will be delisting their remaining games on Monday; Tales of Monkey Island is already gone. Sam and Max, Strong Bad's Cool Game for Attractive People, Puzzle Agent, the Telltale-published Hector: Badge of Carnage, Batman, Guardians of the Galaxy, The Wolf Among Us, and Tales from the Borderlands will be following suit.
It is unclear when—or if—any of the games will be returning to the platform.
To quote GOG, "Sadly, we need to inform you that, due to company’s closure, all the remaining Telltale titles will be delisted from our catalog on Monday, May 27, 10am UTC."
Purchased games shall remain in your library.