EU4 has been marked as unsupported by Steam Deck : r/eu4

Steam Deck OLED: How much is it, and should I upgrade? - Polygon

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Steam Deck, Switch players warned as heat waves cook Japan, Europe - Polygon

Wario64 on X: Valve expands Steam Deck sales to Japan, South Korea, Hong Kong, and Taiwan reservation queue for the new regions will not impact delivery estimates for the current reservation

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Steam Deck Parts – iFixit Store

Proton 8.0 is here, and it brought Steam Deck game fixes

Valve Steam Dec, USB, 256gb

Valve Steam Deck 512GB Handheld Console : Tools & Home Improvement