AC Valhalla
Gave it a long break after around 70 hours, as it was burning me out. Picked it back up, and it was fun again...for a while. I'm now at 100 hours with no end in sight. I respect the effort and the content on offer, but it is a bit much. I don't know what separates it from other long ass open world games, as everything on offer is good. There's just something about it, that starts to wane on you a bit after a while. It's missing a certain something that keeps the experience fresh, unlike a "Witcher 3" or "RDR2". I'd like to say "difficulty", but those other games are easy as piss too.
That said, it is still really good, and I don't have many complaints outside of it not knowing when to end. If you want a game that you can play forever, and discover everything it has to offer, it's hard to beat. I'm at 100 hours and have completed maybe 40% of the side content, if that. It's gargantuan. To think that there are like 3 DLC campaigns to go with it. It's insane.
I think I must be close to something resembling an end game, and on that note, it's a solid 7/10.