In addition to these are some games I've played but not beaten or the games do not have an ending:
-Good Pizza, Great Pizza
-Hello Kitty Island Adventure
-Old School RuneScape
I think I also replayed some Pokémon games this year too but I don't remember.

I don't remember this boss from FF9

Unfortunately, it is actually 67 if you look at my profile since two of the games are unlisted on the steam store. It could have been more if some games I played didn't update with more achievements added.

I'll sell you one for 20usd

-Nintendo Switch 3
-Nintendo Wii UU
-Nintendo 4DS XL
-Etrian Odyssey