Heroes of Might and Magic II: The Price of Loyalty Cheats

This cheat allows you to get free buildings, resources, spells, creatures, mobility, etc.

Go to your shortcut of Heroes 2, right click on properties and add "/NWC" to the end of the command line. It should look something like this:

D:gameshomm2HEROES2W.EXE /NWC

While in the game, press F4 to access window mode and you should see a debug menu (not available at menu screens).