I am speechless. I cannot write much about this game without spoling it so I will just give the basics. I am sure that this game will be talked about by philosophers within the next few years.
-The game nails the concept that being nonexistent is not scary or necessarily bad because you don't know you are dead;
-The game makes you reflect what the value of existence can be reduced to zilch as long as it could be swithced on an off with ease and that you don't experience time when you are not concious;
-The game demonstrates that your sentience is just as valuable and as real as other people's sentience and that the universe will keep doing its thing whether you are there to observe it or not;
-The game makes a point that there are only two safe states where sentience is safe from harm: being nonexistent and living in a virtual world free from harm.
One negative thing:
-the main protagonist's voice acting is mostly flat. 90% of the time it seems that he is simply reading a script and not really putting any emotion behind soliloquies and dialogue.
Overall, I cannot recommend this game enough; it is quite long - it took me 9 hours to beat it. If you like philosophy and have an ounce of interest about what life is all about then by all means play this game.