Fenixp: They didn't, GOG never offered Linux installers, only Mac ones. You may be mistaking GOG with Humble store.
Naxthor: I must be confusing it but i never go to the Humble Store, maybe I am confusing them. <.< I still hope the add it soon then.
Thanks for making me feel crazy XD
"We're initially going to be launching our Linux support on GOG.com with the full GOG.com treatment for Ubuntu and Mint. That means that right now, we're hammering away at testing games on a variety of configurations, training up our teams on Linux-speak, and generally getting geared up for a big kick-off in the fall with at least 100 Linux games ready for you to play. This is, of course, going to include games that we sell which already have Linux clients, but we'll also be bringing Linux gamers a variety of classics that are, for the first time, officially supported and maintained by a storefront like ours." taken from
here In the meantime, why not take a look at
games that work natively on Linux already on GOG :)