Thirty-two video clips from the original game appear in several parts of the movie. Twenty-six appear during the 10-minute battle in front of the house. The remaining 6 are used as transitions prior to the battle.
At the beginning of the 12-minute shoot-out, the camera pulls away from the group of protagonists in slow-mo. At the bottom of the screen, you can see the dolly-track that the camera is riding on.
When Rudy talks to Alicia about Casper's death, an electric light is on, even though the house was built and furnished before the light bulb was invented. Uwe Boll himself pointed it out in the commentary.
Character Greg dies in 'bullet time' with grenades on his flack jacket, yet the characters did not find the hidden weapons cache until after his character is killed.
What are the differences between the Theatrical Version and the Director's Cut/Funny Version?
A
In 2003, House of the Dead, the first video game adaptation of Uwe Boll, who has gotten himself a certain reputation in this area, was released. The film is a mundane zombie flick with a shallow plot and a tendency to be trash. Five years later, Lions Gate has released a Director's Cut version of the film on DVD. The film was made into a comedy with new music, alternative scenes, outtakes and several overlay-commentaries - which is the reason for the subtitle "Funny Version" on the DVD's front cover. A detailed comparison between both versions with pictures can be found here.