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Steam is where most gamers come to buy and play computer games. Steam is a video game digital distribution service by Valve. The software can be used to both buy and launch games, it also packs social features allowing you to make friends and play games with or against them. The Steam platform can also be used by game developers and publishers to launch and sell games to users of the platform.

Epic Games Store is marketplace for digital games. The Epic Game Store is availible via the browser or within the Epic Games launcher. Developers who release games within the store receive 88% of the revenue generated from the game, which is drastically better than other stores.  This help developers sustain their business model, and ultimatley create more or better games. 

Lutris is a free and open-source, Linux-based operating system developed for gaming. With Lutris you can manage your game library, and install and launch games with no setup. Lutris is integrated with GOG, Steam, Battle.net, Origin, Uplay and many other games stores. The operating system is released under the GNU General Public License and is community built, anyone is free to contribute and use the platform.