https://www.pcgamer.com/shadow-of-war-gets-a-free-chunky-demo-to-go-with-its-66-price-cut/

You can now play a decent chunk of Middle-earth: Shadow of War for free thanks to a new demo released by Monolith Productions.

It'll let you play through all the missions in the Núrn region, in which you build an army of orcs and kill off warchiefs. Once you've amassed a strong force, you can march to the area's massive stronghold for a full-on fortress assault complete with siege machines.