civ2units
Emperor
Yes, there are excellent modding tools made by Luis. The most useful is OpenSuite which is a scenario, campaign and unit stats editor. Pretty much everything can be changed for each unit, from which icon it uses, which sound, its attack and def stats, year available etc etc.
If you want to put your own custom gfx in-game as I have then you need to convert an incon into a *.s16 format which was the proprietary gfx format for the makers of PG2 (SSI) and then pack the resultant s16 into the big archive file used by the game. The tools needed for this are PeG dat tool for the s16 conversion and icons tool for packing the files.
All these are available here:
http://luis-guzman.com/
This is a good place to find all the maps that have been made for scenarios@
http://www.gilestiel.eu/~pg2og/mapfinder/
You can make new maps yourself but its time-consuming...
If you decide you want to try your hand at scenario or campaign modding let me know and I can give you a more detailedd run-through of the processes involved.
And in answer to your question about unit limits for a scenario, taking the Adlerkorps ww2 e-file as an example there are 31 countries, 4000 units and around 2000 different unit icons. So yes, a bit more flexible than civ
This sounds all very interesting. Currently I´ve a scenario in mind playing during the Napoleonic Wars. I would like to use this map:
Map for Napoleonic Wars
but I´m not sure how it looks like in game. If I can use about 31 Nations and about 2000 units I could create a scenario which covers all Europe. Also here is a huge amount of units available you made some times ago which I can use.
Would be very great if you could help me understanding how the game and especially the scenario creation works together.