Star Coins: World 9-4
This is our Star Coin guide for World 9-4 in New Super Mario Brothers Wii. 9-4 is available after beating 8-Bowser and 9-4 is open if you got all the Star Coins in World 4.
Star Coin #1 - Use the POW block to eliminate all the Piranha Plants and then wall jump up to the Star Coin.
Star Coin #2 - The second Star Coin takes a good throw from a Bo-omb to get. Just jump on it and throw it to the left.
Star Coin #3 - Right after that you will come to 2 pipes on top of each other. A red and a green. You need to freeze the Piranha Planet in the green so that you can run across it to get in the red. The final Star Coin is in there.