Mitch - The unofficial mobile app for itch.io
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
GameDatum.com - A platfrom of free online games. A list of all the available online free games from various producers online.
Origin - Origin is your new digital playground. It’s where you go to find the best that EA has to offer.
ScienceGameCenter - The goal of the Science Game Center is to demonstrate to teachers, scientists, museums, and parents the myriad ways games can be used to improve education in math and science.
Epic Games - Computer game storefront that gives 88% of revenue to developers