The estimated game length for Resident Evil 7 has now been revealed. It should be around the same length as other Resident Evil games released in the past few years.
According to the reviews for Resident Evil 7 written by Famitsu (via PlayAsia), the story mode on average will take most players around 15 hours to complete on their first go.
This is around the length of other main entry Resident Evil video games. I remember completing both Resident Evil 4 and 5 at around 15 to 16 hours when I first played them. The gameplay length is sure to be longer if you want to 100% everything.
The game comes out on January 24th, 2017 on PC, PS4 and Xbox One. We should know what other people and critics think of it very soon. Many people hope that it is better than the ill-received Resident Evil 6 as that game was too action-heavy for fans.