Which digital distribution platform, launched in 2003, revolutionized PC game retail by pioneering a model that would eventually dominate the industry and transform how games are sold?

The gaming industry has evolved dramatically in how games are sold and distributed. Physical retail once dominated the landscape, but digital distribution platforms changed everything. This trivia question explores a pivotal moment in gaming retail history that transformed how players purchase and access games. Test your knowledge about the business side of gaming that shaped today's digital marketplace!

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Steam (by Valve Corporation)
Origin (by Electronic Arts)
Epic Games Store (by Epic Games)
GOG.com (by CD Projekt)