Poorly translated in-game subtitles.
The subway train is too long to fit in a station. Subway trains are always sized so that any rider in any car can get off whenever the train is at a station.
Chain-link fence is used as flooring in some areas of the Otherworld. Chain-link fencing is not capable of holding a grown man up without giving.
Some doors say that the door lock is broken and the door cannot be opened. If the lock is broken, the door should be openable.
A pallet is called a 'table' in the in-game subtitles.
The jack hasn't any handle attached to it.
The fire alarm boxes are in the Japanese style, (with a red light on all the time). This arrangement is seldom, if ever, found in North America.
The game says that the nutcracker is rusty and impossible to turn, yet it can be used.
Heather doesn't change from her blood-stained clothes before she leaves for Silent Hill.