Newer Super Mario Bros. Wiki
Hydroskip Drain
Game Newer Super Mario Bros. DS
Level number 2-A
Time 400
World Crystal Sewers
Level type Underground, Autoscrolling
Enemies Big Piranha Plants
Buzzy Beetles
Piranha Plants
Game Progression
Previous level (2-3) Switching Sewer (secret)
Next level (2-Final.png) Flameburst Flotilla
(2-Cannon.png) World 2-Cannon.png (secret)

Hydroskip Drain (or World 2-A) is the only alternate level of Crystal Sewers in Newer Super Mario Bros. DS. It's the first of three Mini Mushroom-focused levels, centering on the fact that a Mini player can walk on water.

Hydroskip Drain is unlocked by completing the secret exit of Switching Sewer. Completing its normal exit will unlock Flameburst Flotilla, and completing its secret exit will unlock World 2-Cannon.png.

Star Coins

  • Star Coin 1: Once you reach the third Skeeter, jump off of it to reach a Star Coin high up in the cave.
  • Star Coin 2: After the checkpoint, when the water's rising up, stay on the water instead of going into the pipe. This'll make the screen zoom out and allows you to grab the Star Coin.
  • Star Coin 3: Near the end, there'll be a yellow Warp Pipe in the middle of a group of green Warp Pipes. go into this Warp Pipe, and you'll be granted the third and final Star Coin.

Secret Exit

This level features a secret exit, which'll lead you to World 2-Cannon. After the first two Big Piranha Plants, there'll be a Brick Block in a group of Question Blocks. Hit this Brick Block, and it'll reveal a ? Switch. Quickly hit the switch, then enter the previously blocked off mini pipe. This'll lead you to the secret exit.


Walkthrough (9:43 to 12:30)
Secret Exit (12:44 to 14:03)


Name Music Origin Area played
Underground Remixed underground theme from New Super Mario Bros.. Entire level