I know, I am disturbed for liking it...but it really is like an extremely creative nightmare, and that was sort of the purpose of it. Never heard of that game O.o
Well, it mixes CGI and Cartoons...along with creepy songs, horror-spoofs of real life things (School being a Prison, the nurse's office, etc.) and has a bit of puzzle/mystery to it.
It is a bit darker than Courage, though, and intended for 4-6 year olds...and was made by Disney O.O
There's one part where a decapitated dragon head makes nursery rhymes of some of the Scary Stories to Tell in the Dark.
Meanwhile, may I recommend Nightmare Ned for fans of Courage the Cowardly Dog. (Sad that the Computer Game is near-impossible to play nowadays, but this was a 1997 game! - one of the first games I ever played)