Some differences exist in the demo, as well as there being a bunch of weird files on the disc that weren't used in the final game, like alternate save screens and placeholder images.
"Scene 1" is the beginning until you meet Cybil in the cafe (you don't fight the air screamer, it ends right there); "Scene 2" is a modified version of the school where you get the gold and silver medallions, then go through the clock tower, then find the "Lobby's Key" in the locker room and use it to exit the school. There are some slight dialogue differences and slight grammatical errors here and there. See also the page for the beta versions, which I am still working on.
Poston Market was still Boston Market, Horned Moon Dance was Hand Drawn Ales, the police cars say Buffalo Police, the "Levin St Dog House" notes are missing (there are still 3 blank papers there). Cheryl has weird proportions.
In the video below, I play through this version while comparing it with other versions and the final game.
The teachers list is missing here.
Different text color and "sage's salt water." Natural Born Killers and Pulp Fiction images, which are kept in the item texture in the final game but not the zoomed in pic, as shown, where they are replaced with scenery. Misspelling. The stairs to the basement are blocked off.
"never to let go of his."
Many of the images below are placeholders, backgrounds, early renders, etc. many of which weren't visible in the game but are still on the disc.