by mfaulk80
+1 to everyone who said Castles may be Feld's lowest on themeAlso, as Richard pointed out, with two players you should be hitting at least the low 200s. If for some reason you were well off of that mark, then you definitely have some optimization that you can work on.
A lot of the game is tactical, but there are some strategic elements as well. Those elements just aren't as clearly defined as many of the other games you listed (mostly excellent games imo).
Lastly, I wouldn't judge all of Feld's games by this one play of Castles. While there are some similarities (lack of strong theme), his games generally play very differently.