When Telltale Games closed in 2018 (opens in new tab), several of their games were delisted first on Steam and then other storefronts. Players who had already purchased series like Back to the Future and Tales of Monkey Island—a five-part continuation of the LucasArts series with Dominic Armato returning to voice self-styled mighty pirate Guybrush Threepwood—still had access to their copies, but they were no longer available for sale.
Some of Telltale's games have since returned, with The Walking Dead receiving a definitive edition and Batman a "shadow edition" (opens in new tab), but others remained missing. Until now, Tales of Monkey Island was one of them, but with little fanfare it has returned to both Steam (opens in new tab) and GOG (opens in new tab) with Athlon Games listed as its publisher, and is on sale for half-price on both.
Tales may not be the most beloved of the Monkey Islands, but it's good to have the whole series available again. Several of Telltale's other games are still unavailable however, including the excellent Tales from the Borderlands.