rocket, Quote confronts Misery and the Doctor. The Doctor has purified the essence of the red flowers into a crystal, which allows him to survive even after Quote kills him. The Doctor's spirit possesses the Core of the island, but Quote succeeds in destroying that as well, causing the island to begin falling to Earth. Unless the player has saved Curly, restored her memories and acquired the Booster V2.0 from Professor Booster, Sue will lead the player to jump off the island, where the two are rescued by Kazuma and his Sky Dragon while Momorin and her assistant Itoh escape on the helicopter, leaving everyone else on the island to die. If the player should complete these tasks, they may proceed into the Bloodstained Sanctuary, a bonus stage where Curly can be found and rescued; it is also here that Ballos —creator of the Demon Crown and Jenka's younger brother — is imprisoned. A powerful wizard who went insane and destroyed his homeland after being tortured by a jealous king, Ballos was sealed deep within the island by his sister. At some point, his niece Misery forced him to create the Demon Crown, but she and Balrog became cursed to serve whoever possessed it. Additionally, it is stated via narration that the Demon Crown will repair itself if it is destroyed, and will only truly lose its power if Ballos is killed, necessitating that Quote and Curly kill him. With the big help of Curly Brace, Quote defeats Ballos and stops the source of the negative energy that was causing the island to fall, saving its inhabitants. Balrog saves the two before they are crushed by Ballos' collapsing prison; he had been sent by Misery as thanks for breaking her curse. Quote, Curly Brace, and Balrog leave the island to live out their days in peace. Development Daisuke "Pixel" Amaya developed Cave Story in his free time over five years. He began the project when he was in college and continued working on it after getting a job as a software developer. He started by writing the title screen music and programming rudimentary character movements. The idea for the cave setting evolved spontaneously when he created a number of enclosed spaces. Amaya admitted this lack of planning caused "problems down the line" because he did not have dedicated map editing and data management tools. Amaya describes the game as having