I was really surprised when I saw a new game trailer from Niven's Youtube Page as I just played a new game made by him not long ago but I did enjoyed the short playthrough of the game Mason due to the story of the game. I felt that there was quite a bit of potential with this game and that many things could have been done to make it even more horrifying and amazing than it was.
I liked the interrogation scene and despite having a few English errors here and there, I think it would have been cool if we get to see Mason's perspective from the day that he planned to kill his ex like many short scenes that progressed through the interrogation/interrupt the interrogation. (For instance, planning to kill, looking for the weapon, creating an alibi etc.) I feel that this would definitely prolong the game and provide many opportunities for the creator to create horrifying moments in the game.
Thank you for reading my comment and I wish you good luck in your future endeavours.