The game's ship interior was recreated with accuracy and research considered, and they look more authentic than recreations of the ship in previous film incarnations, but there still are many inconsistencies. Most of the first class public rooms are in fact based on those of Titanic's sister ship, Olympic. Several examples listed below.
The Smoking Room on A-deck is based on Olympic's during the 1920's (one can tell because of the floor tiling) except that Olympic's seating upholstery was green, not brown. Titanic's upholstery was red with blue and red floor tiles against mahogany paneling. This room also includes the painting "Approach to the New World" by Norman Wilkinson which was aboard Olympic while Titanic's was a painting of Plymouth Harbor.
The 1st Class Lounge is fairly accurate (both Titanic and Olympic's lounges looked relatively the same), it did not have mustard-colored paneling, in fact the color scheme was apparently green and gold carpeting and upholstery against light oak paneling.
The reception room's windows are incorrect, missing windows and French doors leading to the dining saloon (which wasn't created for the game). Also, the painting of nymphs at the foot of the landing is a painting from the Olympic, that would have been found on one grand staircase landing walls. What should have been used here was a French tapestry.
The 1st class corridors leading to staterooms did not have silk wallpaper and carpeting, or railings. Most of the staterooms are inaccurately depicted in an Old Dutch style, including for Eric Burn's cabin on C-deck using the layout of a B-deck cabin. Also, the real C-73 would have had white painted walls and mahogany wainscots.
The Wireless Room contains a window on the wall above the desk, which was a feature on the Olympic and not Titanic (the placement of the room is also wrong anyway, since it was located in the center of deck-house, not the port side).
The Turkish Bath (the cooling room specifically) is based off of Olympic's. Olympic's was outboard thus allowing daylight into the room. Titanic's on the other hand was inboard thus cutting off access to portholes and any daylight.
