This was a cool horror game with really good design of the surroundings and environment of the game. Most of the objects and the design of the house was in fine detail and with such a shocking introduction of the game, it would definitely interest players to continue playing the game to find out what happened in the house. I can see that the game is slightly inspired by Resident Evil 4 but since the game is first-person rather than third-person, I would say that the game is more inspired by Resident Evil 8.
The idea of the main character being trapped in between the void while looking for the boy is actually quite interesting and it makes me wonder how the creator of the game will execute that. I feel that the idea that the creator is going for may revolve around flashbacks of weird or past events which somehow link to the current event happening at the house. Regarding flashbacks and memories wise, the creator may refer to the Silent Hill franchise to assist with how to put the main character through a situation of continously changing environments/ dimensions.
Thank you for reading my comment and I wish you good luck in your future endeavours.