Super Mario 64 DS is a game made by the Nintendo's Entertainment Analysis and Development division and published by Nintendo itself only for the DS handheld platform, launched on November 21, 2004, in North America, December 2, that same year, in Japan, on February 24, 2005, in Australia, and on March 11, 2005, in Europe, as a remastered version of the first Super Mario 64 that appeared back in the 1990s for the Nintendo 64 console.
The developer of Super Mario 64 DS didn't try to implement lots of changes in terms of the gameplay, in comparison to the original title, in order to satisfy those that wanted to experience the classic game once more, but did add some improvements to the graphics, in order to attract those that didn't get to play it the first time, and even offered extra playable characters, besides Mario, like Yoshi or Wario.
HINTS
Secret Underwater level
When you enter the castle, go to your right. There will be a door with a "3" on it. Enter it. There will be a painting with bubbles inside. Go to your right. There will be a raised box up in the wall. Jump inside and it will take you to an underwater level. Collect all the red coins and a Star will appear in the center, on the bottom.
Secret Stars
-When you go up the stairs and have one Star, you can go through a door with a number one on it. When you go in, go through one of the pictures of Peach. One of them contains a level with a secret Star.
-As Luigi, from the main hallway go into the door at the top of the first staircase. Go up the stairs and into the door at the top of this staircase. Then, go into the door with red carpet around it. There will be a room with a huge mirror in it. Get a flower on one of the pedestals and go through the mirror. Enter the door in the reflection. You will be in a room that is all yellow, with a lone Star.
-Go to the rec room where you play mini-games. Jump into the painting in that room. Collect the five Blue Stars to get the real Star to appear. This is also a level that appears when you play in multi-player mode.
-Finish the secret level in the character selection room in less than 21 seconds to get another Star.