The animation in the Pilot was directed by Genndy Tartkovsky. The man who created Dexter's Laboratory, Samurai Jack, Star Wars: Clone Wars, Sym-Bionic Titan and Hotel Transylvania.
The song Steven sang to the Crystal Gems would later become the show's theme song albeit shortened to the last part of the song.
Garnet speaks in an American accent here while she has a British accent in the show.
When Steven opens his hand and finds the Hourglass with the money Amethyst gives him, there's a non-existent $3 bill in his hand.
The pilot overall has a different animation style and different character designs compared to the TV series.