Official story explainer
Short answer
The Greek saga matters because it explains Kratos, not because it directly starts Laufey's plot.
What it gives you
The older games explain why Kratos carries so much guilt, why gods fear him, and why any family story around him is never simple. That background helps when Laufey's plans for Kratos and Atreus come back into focus.
What it does not give you
The Greek games do not explain the Everywhen, Laufey's awakening after death, or the new mythological mix around Sekhmet and Begtse.
Best way to use it
Treat the Greek saga as character history. It makes Kratos richer, but God of War (2018) is still the more important catch-up point before Laufey.
Related pages
Sources
- PlayStation: God of War series hub
- PlayStation: God of War (2018)