World 2-4 is the ninth level of Super Mario 3D Land.
World 2-4 is made up of giant building block-like blocks. Throughout the level are giant blue and red flip switches, similar to those from Super Mario Galaxy 2. These switches flip their side every time Mario jumps. This flips every platform in the level. As Mario proceeds through the level, the more difficult the flip switch puzzles become. A few jack-in-the-box like items launch out Goombas at one point in the level. There is also a Coin Heaven in this level.
Star Coin 1 - Getting to the area with multiple enemy boxes, the first Star Coin is above a Blue Tile platform. Be aware that an enemy box will throw a Goomba on that tile.
Star Coin 2 - After the first Star Coin, there is a Rainbow Note Block above a red tile when getting passed the small Spike Ball Bar. The Cloud level it grants the player is given in 3D, so it may be tricky.
Star Coin 3 - At the last portion of the Tiles, there is a flying ? Block with the third and last Star Coin. Make sure to be careful as if you miss the Flying ? Block, Mario/Luigi could fall into the abyss.
Enemies that appeared in World 2-4: