Rustic Games BR showed what the 2008 game would look like on PS1.
Check out Dead Space reimagined as a PlayStation 1 game made by Rustic Games BR. The video is pretty short, but you can still feel nostalgic looking at the fixed camera angles, opening doors, and shooting animation straight back from the Resident Evil and Silent Hill days.
The demake was made in Unity, with the creator also using Blender and Photoshop.
Aside from Dead Space, you can find other demakes on the author's YouTube: GTA: San Andreas, Resident Evil 4 and 7, The Last of Us, and God of War.