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Pues eso, quiero saber cómo subir mis juegos a esta plataforma, gracias con antelación.
Click the "Submit your game" link at the bottom of the page and fill the form:

Someone at GOG will review your game and decide if it gets added or not (all games are curated before publishing). Also, note that there's no Spanish language support yet, so communication will be in English.
Post edited October 05, 2018 by Caesar.