For me it is Fatal Frame, it is my favorite game of all time without doubt.

I love horror games, none can scare me really except for this one. The story, the graphics (even though they are a bit outdated), the environment, everything just makes for an incredibly amazing ghost experience. There are 5 games to the series, which I love, but the third one is the one that I could not make myself play for more than one hour because of how scared I would feel.

Another one would be Breath of the Wild, which I am still currently playing because of the DLC. This game is amazing, there are just no words to describe it.

Last one I can think of is Persona 5, great game, put around 160 hrs in it! The story and message is great and the designs and gameplay is challenging enough to make you come back and play it all over again.

There are also some independent RPG maker games that I like for example Mad Father, Ib, The Witch House, all of which are amazing even with their simple graphics.