It is important to tell upfront that this is not a game in the common sense of the word, there is no real gameplay here. This is an interactive story, so people not interested in that can walk along.
The whole game takes place in a cabin lost in the woods, where you unfold the plot by exploring objects and opening furniture. The main character is deftly voiced, his emotions are convincingly genuine. There is no jump scares, loud sounds, and so on, the fear comes from the well crafted story and presentation. The game world might be small, but each items hold lots of memories, and as the plot advances, you see them in completely different lights.
The length of the game is perfect (roughly 1h30) for what it aims to achieve, and the pace consistantly ramps up in tension. The writing is descriptive, metaphoric and subjective. The emotional side is highly nuanced, and despite the length, you will feel conflicted several times concerning the characters and the situation it presents.
In short: a free game with the quality content you expect from a commercial product. Be aware this is a condensed experience focused solely on storytelling.