I thought that Crimson Realm had a different feel to the two books that are currently released in the Crimson series, probably because there were only two characters and very little interaction with other people. Also there was no large story arc (because it is short!) so there is less going on. I'm not saying that this was a bad thing, rather it was just a note on how it was.
There was more of a focus on Roman in Crimson Realm than there was in Crimson Darkness, and it made him seem like much less of a obnoxious idiot (please insert harsher word - have to keep my reviews clean after all!), and more like he really was trying to do the best by everyone. Least he realised that he was really horrible (read a complete -----------) to Rose, and wishes he wasn't.
A good appetite wetter! I really want to know what happens in the next book!