First, there should be a way to look at the rules while playing. It isn't always easy to remember how all of the different cards react to one another (especially when you are first starting out).

Second, (and this is a real issue) the cards on my screen are so small that I can't always read the numbers on the card. I've lost more than one game due to this issue. When you select a card it should zoom in on it or something.

Finally, I don't know what the deal with this is but I'm buying cards, and it is not adding them to my deck. They are sitting seperately in my inventory, and there is no way to play them. It's not every card I buy, just some of them. They are not duplicates.

I know how to win, but I still have no idea what exactly causes the game to end.

I just try to keep building towards 26 while keeping my opponent from reaching 26 and I win most of the time, the AI doesn't really understand the game either. Maybe it's my difficulty level, but nobody has used a face card against my caravans yet.