Spin-Dig Galaxy

Spin-Dig Galaxy is a galaxy confirmed to appear in Super Mario Galaxy 2. Most of the planets seen in this galaxy are dirt. Mario can find and pick a drill item to bore the ground of these planets to come down the other side across them or also enter into underground areas. Digga-Leg is one of the bosses that appear in the galaxy. Enemies that would include as well are some yellow ground-dweller drill creatures that greatly resemble the Drill Mole from Super Mario Land 2: 6 Golden Coins.

Starting Planet
This is a small planet completely made of dirt. There are three towers of dirt with different heights that Mario can only reach if he finds a Drill around the planet and use it over three marked spots that lead to the towers. The highest tower of the planet is found a Launch Star. The planet also contains a 1-up Mushroom enclosed in a steel cage.

Drill Zone Planet
This planet looks like a platform that has two sides surrounded by a steel fence. Mario can use again the Drill to access to the other side of the planet. In the upper side there are two high towers of dirt, a small round iron platform and two enemies. On the lower side, there are other two towers, in which one is connected to another one on the planet's upper side. Over them, Mario can find a Launch Star and also a Comet Metal.

Steel Ring Planet
The planet is a ring-shaped platform of steel blocks surrounding a Black Hole. Some big Used Blocks around the ring are connected to it by yellow platforms that appear and disappear at times. Over these Blocks, the plumber can find a Midway Flag, a magic gate, and a Launch Star. A 1-Up Mushroom can be found as well over two yellow platforms.

Dirt Tower Planet
This planet is similar to the starting planet, but it is covered by gray dirt and has only a tower, which gives the planet a pear-like shape. Mario uses the Drill to bore the ground and go to the hollow center of the planet to find a lot of Coins. Inside the planet there is a hole where Mario uses his Drill to go to the top of the tower.

Digga-Leg's Planet
A small cylindrical planet made of dirt where the boss Digga-Leg lies. Steping on this planet, Mario must move to the sides like in a two-dimensional environment during his fight with Digga-Leg. Some black and yellow security bars decorate the planet.