Maybe Shadow of War or the PC version of Destiny 2 can make their way up the list before the year is over, but I doubt it. Divinity: Original Sin 2 will likely eclipse Dishonored 2 by the time my group finishes our campaign.
I got all the achievements and reached my personal rank goal online. Once I did that I uninstalled the game to force myself to enjoy the rest of my library.
Lawbreakers (60 hours) was on track to being my most played game until they ruined my favorite class beyond repair so I guess it's Breath of the Wild or Yakuza 0 (bout 70 hours each).
1. Fire Emblem Heroes - probably a couple hundred hours, maybe closing in on a thousand
2. The Legend of Zelda Breath of the Wild - around 150ish hours
3. Splatoon 2 - probably around 50ish hours total
I finally have no desire to play it anymore, so hopefully it will be double digits next year (probably gonna play to try out new patches). For the last 5 years, it used to be 1000 hours per year.