ToME: the Tales of Maj'Eyal

I played recently on nightmare, and fared much better than I had anticipated. I noticed (This may be a placebo effect) that I got more experience. Is this due to:

"All zone levels increased by 50% + 3"

Or am I just imagining things?

Its due to increased enemy levels, yes.

That's interesting then, higher exp for more risk. Thanks.