Supports maps with dimensions of 216 x 216.

XXL patch v1.0 for Heroes of Might and Magic III: The Shadow of Death v3.2 RU/EN

1. Extract __XXL_heroes3.exe into your %HoMM% folder.
2. Extract patch.bat, h3sprite.exe, RADAR.DEF, and rmg.txt into the %HoMM%\DATA folder.
3. Run patch.bat.
4. Run __XXL_heroes3.exe.

The original h3sprite.lod will be placed in the __backup folder, so you can always
restore it if you wish.

After installing the patch, you will be able to play not only on maps of standard sizes (36x36, 72x72,
108x108, 144x144), but also on new, extra-large maps: 180x180, 216x216, 252x252.

Now, instead of random maps of size S, XL maps will be generated, M - 180x180, L - 216x216, XL - 252x252.
By default, regular L maps are generated.

For successful generation of random maps of the largest supported size (252x252 + U), the template size must be at least 98 (Maximum Size in rmg.txt).

Download

I noticed that a small underground is being generated. Quoting Wic:

2. Size

This is a relative value that "recommends" a certain ratio of zone sizes to the generator. Whether the generator will listen to this recommendation or not is unknown in advance. On average, according to statistics, the specified ratio is maintained, but the spread for specific generations is quite large.

As can be seen from the above, the absolute numbers do not matter much here; their ratio matters most. However, if all the numbers turn out to be small enough, the generator may not fill the entire map with zones. This is clearly visible, for example, in the 2sm4d series of templates, where the underground is usually represented by "circles" - the zones occupy not the entire underground, but only part of it.

So, increase the Base Size of the zones, and everything will be fine. Here is an example of 8MM6 XXL + U