A person managed to find a lost Sonic Advance Rom, but something was wrong...
The name of the Rom was simply "Nikko" and everything was altered, it seemed to be a Hack Rom, but it didn't seem to be. When the game started, only Sonic appeared on the screen, no introduction or anything, the atmosphere looked scary and what seemed to be Green Hills, the sky was covered in blood.
When entering a level, there was no music, no enemies, nothing. The atmosphere remained while giving an uncomfortable feeling. Sonic wasn't running at the speed he always runs at... What kind of Rom is this?
Upon reaching the end of the level, a character that had never been seen before appeared, she was completely white, with white striped tights, a white sweater, short hair and she was on her back. She seemed to be a demon, she had horns and a tail, who was she?
A cutscene played of Sonic approaching the demon, but just as he was going to touch her, the screen went black and then showed the demon, with empty, red eyes. When she started talking, she spoke in a language that nobody can't recognize but everybody can still understand her, she spoke Japanese.
She said her name was Nikko, a serial killer who died just before they caught her and accidentally got into a Sonic Advance Rom that was only released in Japan.
It's not possible! How could the spirit of a Japanese serial killer get inside a Rom? The game continued, but upon exiting the level, the ground now had blood stains, and in the background an evil laugh could be heard that could be Nikko's.
Upon entering the second level, the scene changed to be some kind of freezer or slaughterhouse. Sonic managed to leave the room he was in, but then Nikko's laughter was heard again, this time saying "逃げるつもりはないよ！" (Which means "You're not going to escape!")
At this point a chase scene would begin, with Nikko chasing Sonic with a bloody machete in her hand. It seemed almost impossible to win because Nikko was much faster than Sonic, but Sonic still managed to win.
Upon entering another room of the slaughterhouse, there was Tails, which... Was not alive, obviously. His tails were detached from his body, while he had his wrists hung with handcuffs.
Entering another room, there were Knuckles and Amy. Knuckles' throat was horribly slit while Amy's head was nailed to a stake, her body was missing. The same with the other rooms, the rest were dead, and Sonic was the only one who was alive.
Upon exited the level, the atmosphere became darker and Sonic moved slowly. Upon reaching the last level, it was Green Hills again but with the same atmosphere, after a while Nikko appeared, with her evil smile, empty and red eyes and her bloody machete.
「見つけたよ」("I found you~") Nikko exclaimed, then stabbed Sonic with the machete and killed him in the most grotesque and horrible way ever.
When finished, Nikko approached the screen and said "あなたが次のだ" ("You're next"), then closed the game with a grotesque ending.
I hope you guys loved this kind of short Sonic.exe Creepypasta :)