Source: http://www.makeuseof.com/tag/6-digital-distribution-services-linux-gamers/
Steam is the frontrunner platform for digitally downloading PC games. I still remember when Steam first debuted and nearly everyone screamed about how much it sucked and that it had no future. Well, look where we are now.
GOG is great. It loses to Steam in a handful of areas, but GOG’s customer support is lightyears ahead of Steam’s customer support — which is so lackluster that it seems disingenuous to call it “support” at all — and this reason alone could be enough to consider GOG the superior service.
Itch.io is a newcomer to digital distribution, but it has surged in popularity over the last year or so. Why? Because it makes it incredibly easy for indie developers to publish their games, create product pages, and earn revenue.
Like Itch.io, Desura is mainly known as a publishing platform for indie developers. It used to be a viable alternative to Steam, but news broke of potential bankruptcy in mid-2015 and it’s still too early to tell if Desura will collapse for good.
GamersGate celebrates its 15th year in business this year, which is a bit shocking because most of the gamers I know actually haven’t heard of this site before.
Lutris is an open source games manager that prioritizes free and open source games, which naturally makes it a perfect fit for the Linux gaming community. Like Steam, it’s a downloadable client that manages all of your games using one clean interface.