Brain Buster Puzzle Pak known in Japan as Nemurenai Yoru to Puzzle no Hi ni wa... (眠れない夜とパズルの日には…。, Nemurenai Yoro to Pazuru no Hi ni wa...), is a puzzle video game released for Nintendo DS in Japan, North America, and the PAL region. The game is a compilation of Nikoli puzzle games including Light Up (called Light On), Slitherlink, Sudoku, Nurikabe, and Kakuro.