- Gravity: 32
- Diameter: 31
- Fuel Cells: 4/4
- Crystals: 3/1 ($2000)
- Treasure: 4 ($2802)
- Equipment: 0
- Tanks/Ships: 1/1
- Cyberzones: 0
- Warpzones: 0
- Password: MKHWBPHDHXTB
For a planet that lets you skip four very hard stages, number thirteen is very easy. The planet is basically a planet-sized cavern with a straight passage down the center a large rock formations on both sides. There are very few enemies; just gravity orbs, flying balls, guns, and a few battleships, none of which pose a major threat.
Left of the ship is a gap that leads into the planet, but first fly past it is to a small pit with a tunnel containing a tunnel with a crystal. Past the crystal is another small pit with a treasure in the lower left corner. After collecting both items fly into the gap, where a treasure is along the left wall of the short chamber.
Fly into the main chamber and take the upper rightmost path around the large rock formations. Almost directly under where your ship is a pit containing a Fuel Cell. Take the fuel back into the tunnel and continue around, hugging the right wall of the planet, heading down past a fuel tank. Near the bottom of the planet is a large rock formation, with a way past it above and below. Take the upper route to the top of the rock where there is a small wormhole. Head to the left and then into a small tunnel in the left wall, where there is another treasure. Underneath the rock formation is another Fuel Cell, and to the left of the Fuel Cell, directly below the gap to the surface, is a crystal.
Once all of the items are collected, fly through the small wormhole to get to a tiny chamber containing a crystal. Drop it in the wormhole and fly through it until you get to the small wormhole in the western side of the planet. Below the wormhole is the third Fuel Cell and directly to the right, back to the eastern side of the planet, is a chamber with another crystal.
Go back to the rock formation where the third Fuel Cell was located and fly around the left side until you reach a spare ship. Fly to the left and up the left side of the rock overhang to get to another treasure. From the wormhole fly up to the ceiling of the inside of the planet and head to the left until you reach the first narrow pit, which contains the final Fuel Cell. After dropping off the Cell return to the same area and continue to the left around the side of the planet. Along the side of the planet are two paths to the right; the upper one leads to a spare ship, and the lower one leads to the large wormhole. Get the ship if needed then clear out the area through the wormhole and grab the piece of the Golden Warpship.