Cute graphics! I liked our little ghost friend :D
The controls are a bit wonky, the very slow acceleration the red character makes it very hard to control. I don't know if this is intended but I could jump on the ghost and with the right timing just ride that little fella all the way to the end of the level xD. Intended or not, it was fun to do :D
One time, I did this and flinged my character very far to the right and my lil' ghost buddy could not enter the screen anymore, very sad moment :(
Anyway, well done for your game!