I enjoy random map scripting, and it's especially interesting to consider the possibilities that come with using object constants to generate hidden/beta/undocumented stuff.
Age of Empires II HD The Forgotten expansion adds a series of new RMS constants which were unfortunately not really documented.
I've done some testing and compiled a list of additional constants that were added with all the expansions.
If you are looking for constants that were in The Conquerors already, take a look at this list
If you want more details on the terrains, I have a sheet for that too!
There are many new constants past 865 (where AoC stopped) but also some constants that used to cause crashes or that used to code for dead heroes in the 1 to 865 range have been reassigned to working AOF objects.
This list should be complete as of patch 5.8 in the HD Edition
Future patches may add more content!
Wololo Kingdoms uses different constants!
Feel free to send me corrections or updates/findings of your own!
Hope this is useful.
-Added the Rajas stuff to the grouped by type sheet
-Added a separate terrains sheet
-fixed minor spelling mistakes
-Added everything from Rise of The Rajas
(only on sheet 1; I still need to add the Rajas stuff to the second sheet too)
-Sheet 2 now shows everything grouped by type for easy reference
-Added everything from African Kingdoms
-Added units from the most recent patch