The HAL Room
in Kirby's Adventure
cannot be accessed in the game's remake, Kirby: Nightmare in Dream Land
. This may be due to unorthodox NES programming needed for it to behave as a special area inside another room; the game was released almost ten years after the introduction of the NES console, and HAL developers were pushing the system to the limits as to what it could do. Kirby: Nightmare in Dream Land
's HAL Room is still inside the level's memory, but can only be accessed via codes. Also, in the original NES game, accessing the room requires the use of glitches, and it is not supposed to be normally accessible. Programming differences between ports (NES to GBA) and glitch fixes likely cut out any method to normally access this room.