Castles of Mad King Ludwig is funny and a good game to play. You build your own castle by buying rooms and gain points depending on the rooms and what they are placed next to. Plus there is bonus points to achieve through private goals and King favors. The funny part is the talk around the table of the mad castles you end up building.
The difference in the solo play version is that you flip over room cards and they go in order to the $2000, $4000 and $6000 spots. You choose one to use, or do the $3000 stairs / hallway option, or the pass and get $5000 option. The rooms that didn't get used then get discarded. The money goes to the bank instead of the master builder, and those are the only differences.
I like it when the solo play is not much different to the multi player game and Castles of Mad King Ludwig is pretty much the same game. I really like it.
The only thing I don't like is that there is a lot of shuffling and setting up just for a quick one player game. A game will take around 20 - 30 minutes for a solo play.
The solo scoring is ranked:
<50 = Court Jester
51-70 = Servant to his Royal Majesty
71-85 = The Duke of Castle Building
86-100 = The Supreme Prince of Regent of Palaces
>101 = King of Grand Castle Construction
I have yet to get past The Duke.
Here is photos from the last 3 solo plays
My solo game ranking from the games I own:
1st Clans of Caledonia
2nd Ganz Schon Clever
3rd Castles of Mad King Ludwig (would have been 2nd if it didn't take so long to set up between games)