Not a cheating mode, exactly, but if your build supports it you can play

Not a cheating mode, exactly, but if your build supports it you can play in

Q:zombified
My zombies refuse to follow me into the next level. Is this a bug?
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A:zombified
No, it's a deliberate design decision. As of version 0.5, zombies,
skeletons and simulacra are considered too stupid to manoeuvre along
staircases. We realize that this weakens Necromancers but we consider the
interface improvement of zombie herding becoming unfeasible to be more
important.
Keep in mind that the same also applies to hostile undead of the same kind!
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All of the devteam members submitted a number of code intensive patches 

All of the devteam members submitted a number of code intensive patches

ahead and play. Be sure to leave some feedback/suggestions/bug reports on
the SourceForge trackers.

ahead and play!
Be sure to leave some feedback/suggestions/bug reports on the SourceForge
trackers. When doing so please mention the version (r????) you're currently
playing in case the bug's already been fixed or the feature already
implemented.

* Zombies and skeletons can no longer use stairs.
* Transformations meld equipment instead of removing it.