Mine's probably:
Legend of Zelda: Breath of the Wild - 50-60 hours (according to Switch profile)
The Witcher 3 - ~33 hours (and still have the two expansions, but I'm saving those for the new PC)
Horizon: Zero Dawn - 28 hours
I have so much sitting on my backlog that I haven't gotten around to still that are dozens of hours. One day.
Legend of Zelda: Breath of the Wild - 50-60 hours (according to Switch profile)
The Witcher 3 - ~33 hours (and still have the two expansions, but I'm saving those for the new PC)
Horizon: Zero Dawn - 28 hours
I have so much sitting on my backlog that I haven't gotten around to still that are dozens of hours. One day.