Middle-earth: Shadow of War [official site] will add the option to endlessly play Shadow Wars, the fortress-assaulting mode that’s the focus of the game’s fourth act.
Leif Johnson told us he grew bored of Shadow Wars before the end of the chapter but hey, if you want to endlessly attack and defend, you will get that option.
“My main complaint is that the Shadow Wars do go on for too long, even with my easily conceived ‘optimal’ approach.
I suppose playing Shadow Wars endlessly would be more like larking about in a sandbox than trying to work through a chore to see the game’s actual ending, mind.