>>713155004
there was a fan expansion for thief 2 named thief 2x that still holds up to this day, maybe 1 or 2 levels do not reach the quality of the original games. It's a full campaign with cut scenes and everything. Old but classic.

I also remember campagins:
the black fog
the seven sisters
dracula reloaded
bathory
when still
death's cold embrace (the longest besides thief 2x)