Ive created a Napolenic Card Game, for PC and windows tablets, its free, very advanced A.I. each card is played with a uneque terrain card, each card has differrent benifits depending on terrain, the Leaders inprove a hand, you have the option to hold a card and terrain.
screenshot
https://drive.google.com/file/d/0Bwg1l-y33WTRRDVpYV80ZXU1SlU/view?usp=sharing
here is version 43, far better A.I. but not compiled a Mac version yet.
https://drive.google.com/file/d/0Bwg1l-y33WTRV1V5ZFgxZGxOY3M/view?usp=sharing