It looks like God of War Ragnarok is getting a follow-up on PS5 in the coming years.
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God of War Ragnarok Will End the Norse Saga, But What Mythology Comes Next?
According to Playstation Blog, as of August 2021, 19.5MM copies for God of War on PlayStation 4 have been sold through : r/PS5
God of War (2018 video game) - Wikipedia
God of War Ragnarok, Silent Hills and PSVR 2: Analysts and journalists share their Not-E3 predictions
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God Of War Ragnarok DLC (PS5) Just Got A Huge Update Atreus Spin-Off, 2024 Release & Announcement
God of War Ragnarök - Wikipedia