Lunatic_Gamer
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Of the 80 largest video game companies, 18 are based in the United States, 12 in China, 12 in Japan, and 10 in South Korea.
Certain major companies such as Valve Corporation are not included in this list. This is primarily because Valve is a privately held company and does not publicly disclose detailed financial statements or revenue reports.
List of largest video game companies by revenue - Wikipedia