AGEOD Adaptive Game Engine (AGE)
For its own titles, AGEOD created and further develops the Adaptive Game Engine (AGE), a generic platform for turn-based strategy games, that is expandable and adaptable to different game scenarios. The engine comes in three main versions which in simplest terms determines the breadth and depth of the game which is build upon it. The scope may be heavily oriented towards a traditional war game (e.g., Birth of America, Napoleon's Campaigns, Birth of America 2: Wars in America) or much higher level with elements of country management, diplomacy, resource management (e.g., Ageod's American Civil War), and grand strategy considerations (e.g., Pride of Nations).
The modularity of the AGE engine allows AGEOD to back port many features of recent releases to existing titles, practising a patch policy that goes beyond mere bug fixing.
from Wikipedia: http://en.wikipedia.org/wiki/AGEod#Adaptive_Game_Engine_.28AGE.29