I have been playing levels.dat made by Dmitriy Berketov, 2005 . Bugfixed version (RS) (from the download section).
I can't get through level 6 - there are 2 gates that may lead the way but no way to open either one.
Level 13 - having a lot of trouble - getting Jaffar to step through the gate is possible but once he's dead you can't get to the exit door.
Finally, the last level is a maze but there's no way to complete it. You get stuck in the upper left corner.
Has anyone else tried this? Are there still bugs? How can I write Dmitriy Berketov?
Thanks!
Levels by Dmitriy Berketov
mail me to ecalot@princed.com.ar and I'll send you his email