Castle has a bit of a "collectable cards game" feel to it. Different cards have different effects, and finding out how to best use the various combinations of them is an absolute blast. I just wish there was an expansion with new cards, although what comes with the game keeps the game fresh for a long time.
An underrated game. For us we didn't quite get it the first couple of games, but after a few tries, we were able to see the strategy behind the gameplay. A great little game that doesn't take long to teach, but takes a while to master. The two player version is very strategic, while 5 players is fun chaos.