The pilot episode differs from the actual show. The characters are shown here in the cel-shaded models while the show itself is in 3D models, Daisy and Toodles don't appear in this episode, Minnie is wearing her Mickey Mouse Works outfit as opposed to the pink and white-dotted dress she wore on the show, Donald has buttons on his shirt while he doesn't on the actual show, Goofy is shown wearing a black vest instead of a brown one, and there is no music or sound effects, with the exception of the kids off-screen shouting "Mickey Mouse" at the beginning and end of the pilot that they never do in the actual show.
The pilot was originally made in 2005