World 1-4 (New Super Mario Bros. Wii)

World 1-4 is the first underwater stage of New Super Mario Bros. Wii and the first level after world 1-Tower in World 1. It introduces Cheep-Cheeps, Deep-Cheeps and Eep-Cheeps.

Layout
At the beginning, there are two ? Blocks, two Goombas, and a Warp Pipe leading underwater. Here, there are two Cheep-Cheeps that can be frozen so Mario can get to the ? Block, which will get him an Ice Flower. There are many bubbles on pipes around the level that can push Mario into walls or enemies.

The next area also has Deep-Cheeps which must be frozen along with the Cheep-Cheeps. There is also another ? Block with another Ice Flower in case Mario has lost his previous one. Past here, there is a Red Ring in a secret area on top of the stage which will make eight Red Coins for Mario to collect. There is also the checkpoint flag.

In the next area the road is blocked by an Urchin so Mario must freeze it and the road is unlocked so Mario can get through. There is also a Star Coin which is guarded by a Mega Cheep-Cheep that Mario must freeze to get past. After here, there is a Star Coin guarded by two pipes that generate a current that keeps the player from getting too close. The Star Coin can be collected if the player freezes a passing Cheep Cheep and stands at the top of it as it floats up, fighting the current. A similar one is a short distance forward, where an Urchin must be frozen to block the current and allow the player to pass and collect the Star Coin. In the next area there is a Spiny Cheep-Cheep that will follow Mario. He must destroy that fish and then get the 1-Up Mushrooms at the bottom of the screen. There is also a Fire Flower and a Starman in the ? blocks. Mario must then go through a Red Pipe. Many Cheep-Cheeps populate the next area so Mario has to use his Starman to destroy as many as possible and dodge two Spiny Cheep-Cheep then go through the green Pipe. Then there is a Koopa Paratroopa that Mario can use to land on the top of the Flagpole at the end of the level.

Star Coins

 * Star Coin 1: Above a Cheep-Cheep, but the player needs to freeze the Cheep-Cheep with an iceball to jump on it and collect the Star Coin.
 * Star Coin 2: Between 2 Red Pipes that generate a current to keep the player away from the Star Coin. The player can stand on a frozen Cheep-Cheep to collect the Star Coin.
 * Star Coin 3: Next to a Warp Pipe that's next to a red pipe with a current, but the player has to freeze an Urchin to block the current.

Enemies

 * Goombas
 * Cheep-Cheeps
 * Urchins
 * Mega Cheep-Cheeps
 * Deep-Cheeps
 * Mega Deep-Cheeps
 * Eep-Cheeps
 * Clampies
 * Spiny Cheep-Cheeps
 * Koopa Paratroopas