New Super Luigi U: Rock-Candy Mines- Castle -- Roy's Ironclad Castle

Roy's castle has stone blocks that drop into the lava to serve as platforms. They move through the lava, then stop. Hit the ? Switch to make the first Star Coin drop down with a large stone. Move quickly to avoid being crushed. There's an item block with a 1-up in it. Going forward, there are several stones dropping onto conveyor belts, so time your jumps. Ahead, some blocks will drop down and carry the second Star Coin under a conveyor belt into the lava. Run quickly over the conveyor belt and drop down on the right side to get it. Ahead is another ? Switch that makes the stones form moving staircases. Transfer to the next one, which will take you to the boss door. Roy has his Bill Blaster and will fire Bullet Bills at you. Stomp him three times to win.

To get the third Star Coin, use the red switch near Rock-Candy Mines-5 to make a path to the back door of the castle. There are more moving stones as well as Podoboos. The third Star Coin is moving on the conveyor, then drops onto a stone moving to the right. Grab it, then transfer to another stone moving towards the boss door. Beat Roy again and you'll have all of the Star Coins in Rock-Candy Mines.

New Super Mario Bros. U: Rock-Candy Mines- Castle -- Roy's Conveyor Castle

The castle is filled with conveyor belts carrying large blocks which can crush you. Some of the blocks form stepping stones in the lava. When you reach solid ground, you'll see the first Star Coin under a ledge. A set of three blocks will fall. Let the first two fall, but run before the third falls because it will block access to the Star Coin. There are conveyor belts under the lava which allow the blocks to move through the lava in some spots. Ride one of the blocks moving to the right and you'll see gaps in the low ceiling. The first two gaps have coins in them, but the third one does not. Wall jump up the third gap to the hidden pipe above. It leads to a room with the second Star Coin on the right, next to a conveyor belt. Run quickly to get the Star Coin before blocks drop in to cover it. When you return to the main level, there's a Red Coin Ring near the midpoint. Past it is a ? Switch that makes blocks and Dry Bones drop from above. You'll need to hit the switch to make it to the boss door. Don't worry about the third Star Coin just yet. Go through the boss door and launch from the cannon to Roy's Airship. Oddly enough, this battle takes place outside. Roy Koopa Jr. has a bazooka-style Bill Blaster. Flying platforms will appear overhead. Stomp Roy, preferably before he can fire any Bullet Bills. Three stomps will defeat him. This opens the path to Meringue Clouds. To get the third Star Coin, take the path behind the castle. There's another ? Switch that will make blocks fall. Let the first few form a path in the lava, but move quickly and run under the ledge for the third Star Coin before a block blocks your path. Keep going to the left for blocks that will move through the lava to the boss door. You'll have to duck before you reach the boss door. Defeat Roy again. We now have all the Star Coins in the Rock-Candy Mines.

New Super Mario Bros. 2: 1-Castle

In this castle, there are pillars rising out of the lava that are topped with spikes. To get around them, hang from the tightrope above. Drop down from the second tightrope when the pillar without spikes is visible for the first Star Coin. Over the item blocks near the Dry Bones are some invisible blocks. Go up and to the left for a Raccoon Leaf. Get a running start and fly, following the trail of coins for the second Star Coin. Slowly descend to the midpoint. Swing from the rope for coins and to cross the lava. There are Thwomps in the area, so be careful. Let the giant Thwomp break the stones below to access the third Star Coin. Fly up above it for lots of coins. Just to the right is the boss door. Roy Koopa Jr. appears. He'll charge you, despite carrying a wand, and the walls will slowly close in. Stomp him to send him into a shell cycle, where you must avoid him. He'll come out of the shell cycle after bouncing off the walls about three times and you can stomp him again. Hit him three times to defeat him. The key will appear, so get it. The right wall will rise up, revealing Iggy Koopa and Peach. Iggy slaps himself and takes Peach to the Fort of World 2.

Coin Total: 9148
We get a message saying "Coin Rush is now available from the Main Menu!" We save and continue to World 2. We'll deal with the cannon later.

New Super Mario Bros. 2: 1-Fort

Our first Fort of the game. There are some new enemies here wearing skulls. They're otherwise like other enemies. We get a Raccoon Leaf and use a snake platform to get up. There are snake platforms near many platforms. There is a hidden 1-up under the Red Coin Ring. Go to the left for the first Star Coin. Avoid being crushed by the snake platform below it. Above is the midpoint and a door. You'll find snake platforms moving into a gap to the right. Go into that gap to find a yellow pipe. It will take you outside to a snake platform staircase and the Red Goal. This opens path to World 1's cannon. If you do not go to the Red Goal, there are snake platforms over the door. They allow you to reach a red pipe on the left. There's a P-Switch in the room that makes Silver Coins appear within the snake platforms. The Silver Coins are only a distraction, however. Once you hit the P-Switch, quickly go to the platform above the snake platforms. Here, you'll find brick blocks that allow you to reach the second Star Coin. You must collect the Star Coin before the timer runs out, as it will disappear. It's a tricky one to find. Keep climbing and you'll find the third Star Coin surrounded by a snakeplatform and guarded by a skulled Piranha Plant. Approach with caution. Take the snake platform above to the boss door. This game's Mini Boss is Reznor, first seen in Super Mario World. It's standing on item blocks in a ferris-wheel configuration. All you have to door is hit the block underneath it. Do this quickly, as it will make the floor disappear. Hop on the blocks if necessary. This Fort has two. After you take out both of them, Roy will drop in from a chain, roar, and leave. He'll take Peach to the castle.

Coin Total: 2194