I think I haven't even finished half of that in my entire life.

I must have completed between 15 and 20 games so far.

Damn, I have a new level of respect for Conina and Basil.

I think I beat 12-15 games this year. I didn't really keep track, and almost everything I played was long 100+ hours.

Horizon Zero Dawn 100% complete. 120 hours.
BotW 100% complete. 120 hours.
Sonic Mania 24 hours.
Darkest Dungeon 80 hours.
Slime San 15 hours.
Nier Automata 50 hours, nearly 100% complete. All major endings.
Splatoon 2 - 120 hours and counting.
SMTIV: 120 hours just for a single playthrough. Need to go back and beat it with different paths.
EOV: 120 hours just to finish the main story. Need to do the post-game content still.
Xenoblade Chronicles 2: 140 hours in and still playing. Will likely finish before the year ends.
Mario X Rabbids 100% complete, 50 hours.
Persona 5 80 hours, but need to go back.
Nioh 100+ hours. Just did the main story. Could have spent another 100 hours on it.
Terranigma 60 hours. 100% complete.

I can't remember if I played Bayonetta 2, Windwaker HD, or DKC returns this year or last.