Mistakes in in-game text and subtitles.
Lanterns are sometimes shown on even in places where no-one has been.
Prosperity's walls do not have full barriers on the edges, which exposes people on the wall to incoming fire.
Some broken television sets have pieces of glass hanging on as if they are reinforced like a car windshield. Television sets do not use glass reinforced in this way.
There are no crocodiles in Montana.
Several atomic detonations can be seen. Standard policy is for one atomic to be used in a target area.
One of the missions takes place on a crashed aircraft carrier. Montana is too far inland for an aircraft carrier to be a reasonable distance away.
Although Mr. Rye is a pilot, the Player has to fly the æroplane.
The champion may ask for cover when he charges - even though he is the only other enemy NPC in the Arena.
The gun at the race dinner is in a toilet, not behind it as said.