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.

The game received "average" reviews according to the review aggregation website Metacritic.

[1] Game Informer gave it a favorable review, about two-and-a-half months before its U.S. release date.

This puzzle video game-related article is a stub.