|Game||Newer Super Mario Bros. DS|
|Enemies||Big Piranha Plants|
|Previous level||(2-3) Switching Sewer (secret)|
|Next level||(2-) Flameburst Flotilla|
(2-) World 2- (secret)
Hydroskip Drain (or World 2-A) is the only alternative level of Crystal Sewers from Newer Super Mario Bros. DS. It's one of three Mini Mushroom-themed levels, with this one centering around how Mini Mario can walk on water.
- 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.
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)
|Underground||Remixed underground theme from New Super Mario Bros..||Entire level|
- In "SlidePlayer Progress1", this level is shown with the name "Waterskip Drain".
|Areas||Levels||Crystalswoop Grotto • Pipebreak Cave • Switching Sewer • Wagon Way • Fliptube Tower • Tightrope Ravine • Gushing Culvert • Hydroskip Drain • Flameburst Flotilla|
|Other||World 2-Cannon • Special House|
|Enemies||Enemies||Buzzy Beetle • Big Piranha Plant • Big Swooper • Big Cheep Cheep • Bob-omb • Bullet Bill • Cheep Cheep • Dry Bones • Fire Piranha Plant • Hammer Bro • Koopa Troopa • Koopa Paratroopa • Piranha Plant • Swooper • Skeeter|
|Bosses||Bowser Jr. • Mega Goomba|