HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

I agree with rebellious: when it's unclear where the area with the Grail is located, I often try to overlay the puzzle map onto the real terrain; however, I have an older version of the mod, and in it, the scales of these images match. In the worst case, I'll have to take screenshots and work with them in a graphics editor - not a very pleasant alternative. :smile21: