VCMI is an open-source project aiming to reimplement HoMM3:WoG and SoD
game engines, giving it new and extended possibilities.  Among current
features are:

  - Complete gameplay mechanics
  - Almost all objects, abilities, spells, and other content
  - Basic battle AI and adventure AI
  - Many GUI improvements: high resolutions, stack queue,
    creature window
  - Advanced and easy modding support -- add new towns, creatures,
    heroes, artifacts, and spells without limits or conflicts
  - Launcher for easy configuration -- download mods from our
    server and install them immediately!
  - Random map generator that supports objects added by mods