The REmake was a total overhaul of the visuals from the PSX original. It wasn't just a quick makeover. It was the remaster of the REmake that was a bit of a quick makeover. They just upscaled the 3d models, improved some of the normals on them, and scaled the rendered backgrounds up and just slapped a sharpen filter from Photoshop over the top of them or something, and adjusted the aspect ratio. It did the trick enough for 1080p TV's today, but they must have lost the original scene files or something to re-render the backgrounds properly. It still looks very good, though. Even for today's standard. It also still holds up very well as a game because it's so well designed. The REmake and Zero can be picked up for cheap, so I'd recommend picking them up before playing the second game.