All the new 3D models are professionlly made and replace every single flat boring obsolete 2D sprite. The new physically-based rendering (PBR) brings a new stage of realism by allowing the light rays to interact with the given surface matter to the textures, for example the environment made of metal realistically shines as it would do in real life. The remastered version adds fresh features, like High Definition Textures with PBR materials, Dynamic Lights, shaders and postprocessing effects. The launch version, released in ModDB features the entire Doom experience, starting from Doomguy's initial accident in the UAC Labs to his desperate leap into the unknown dimension of Hell. The remastered version brings full 3D into an old 2.5 game.
Finally, in 2019, a group of modders released a remastered version of Classic Doom, a labor of sweat, tears and coding designed to give gamers the truly re-imagined experience they'd so desired.