KHGSE is a game from Gabe Studios with the help of Square/Soft/Enix.
Like the previous games, it focuses on Sora and his friends battling against the forces of darkness. It also offers a number of improvements over the original with many new features, most notably Sora's new Drive Forms, an improved camera, and more Reaction Commands.
The theme song for the game is "Stationary" (Japanese version: "Effection") performed by Gabe himself.
Kingdom Hearts GSE begins where the end of KHIII left off. Sora and his companions have been in peace for a while, remembering their memories. One day, Sora eventually arrives in Twilight Town again, he is greeted by Dilan who warns him of his journey. Sora continues his quest by unlocking paths to new worlds, learning of Gabe and fighting the Heartless and Nobodies again, as well as facing Terra-Xehanort. As the game progresses, Sora learns about Brick, Boomer and Butch and how much they have in common.
The story begins with the player in control of Dilan in Twilight Town. Dilan has dreams of his previous adventures in Organization XIII while increasingly mysterious activities begin taking place in Twilight Town during Dilan's summer break. After obtaining the Wind's Lance to defend himself from the Nobodies, Dilan comes in contact with the familiar face named Aeleus. Finally, confronted by a mysterious, armored man called NaU, Dilan discovers Sora, Donald, and Goofy searching in the hidden basement of the mansion. Dilan seems to remember Sora. As Donald and Goofy remember him as Xaldin, Jiminy Cricket, who had previously chronicled the trio's adventures, finds that his journal is now completely blank, save for the note: "Thank Me".
After that you play as Sora, Riku, Jack, Kairi, Roxas and sometimes King Mickey for the rest of the Game