Super Mario 3D All-Stars is a collection of three of the Nintendo mascot’s best games. Spread across several console generations, players will be able to enjoy Super Mario 64, Super Mario Sunshine, and Super Mario Galaxy. Each of these titles is considered by many to be some of the best Mario games in the plumber’s entire catalog, with Super Mario Sunshine getting its first re-release since it launched in 2002.
Given the sheer age of these games, some of the Stars will be tricky for players to earn due to the sheer lack of information given in-game. Item you will need if you want to obtain every Star, or just make Mario’s life easier, is the Metal Cap. While not obtainable from the start, this is a pretty easy power-up to unlock once you know where you have to go.
How to Get the Metal Cap
To get the Metal Cap, you will need to first have access to the basement by beating Bowser once. After you do this, head to the basement and keep following the underground corridor until you reach a door. Go through the door and hop into the pool of black liquid. It’s fine – probably.
This is the entrance to Hazy Maze Cave, so pick the first mission and immediately take the left path when you spawn. Long jump across the gap before opening the door to reach the next room. Now run around the right side of the room, taking extra precaution to avoid the enemies and edge of the path. Perform another long jump to reach the cave entrance that was adjacent to you when you first entered this room. Run up the path, avoid the rolling rocks, and take the elevator down to the lake.
Follow the path down to the water and then swim to the small area of land on the left. Wait for the Nessie the Sea Monster to swim near you and hop onto her back. Immediately perform a ground pound to lower her head and then go stand on it. She will then raise you up, allowing you to reach the grated area with the door shown in the picture above. Go through the door to reach another black liquid portal. Jump into this to reach the Metal Cap tutorial level.
Now just make your way to the end of the level and jump on the Green Switch to unlock the Metal Cap throughout the entire game. You can also grab eight Red Coins in this bonus level to earn a Star. One of them is right by the switch, two more are in the alcove across the narrow bridge, and the rest are all underwater below the switch. Use the Metal Cap to run underwater and gather all the coins needed. Additionally, there’s a 1-Up Mushroom at the end of the river in the yellow box by the waterfall. Once you have all eight, a Star will spawn and you can exit the level.
Congratulations, you now have access to the Metal Cap boxes in every single level!