Ultimate Prank Game

Ultimate Prank Game is a game and video created by user TingSing. The video was uploaded in June 2008. Though it is a game, there is no download link and, according to the description, there won't be.

Video
It starts off with the user (presumably TingSing) opening up the file for the game stored on the computer. After loading, the game immediately begins, revealing it to be a maze game with red areas, a multicolored orb as the controlee, and a glowing rock as the end. The first two levels operate like a normal game, but just before one can complete the third level, an image of a hooded boy with fangs, glowing eyes, and scars appears with a loud, female scream.

Link
WARNING: This video contains a screamer.

youtube.com/watch?v=hdWfjit6HOk&index=26&list=PLwsT