Short answer

1666: Amsterdam is built with Unreal Engine 5, as confirmed by the official Epic Games Store Early Access FAQ.

What that tells players

The engine name explains the technology base, but it does not guarantee a particular frame rate or visual preset on every PC. Actual performance still depends on the game's build and the system requirements published by the storefront.

Check the hardware notes

Steam lists DirectX 12, an SSD, and hardware ray tracing among the current requirements. Treat those concrete specifications as the buying checklist rather than assuming that any computer capable of running another Unreal Engine 5 title will behave identically.

Engine is not a performance guarantee

Unreal Engine 5 identifies the technology base, not a universal frame-rate target. The more useful compatibility signals are Steam's DirectX 12, SSD, hardware-ray-tracing, VRAM, CPU, and GPU requirements. Use those specifications—and current patch performance—rather than assuming results from another Unreal Engine 5 game.

References

  1. 1666: Amsterdam Early Access FAQEpic Games Store / Panache Digital Games
  2. 1666: Amsterdam on SteamSteam