Bowser's Galaxy Reactor

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Bowser's Galaxy Reactor is the final level in Super Mario Galaxy. It is located in the center of the universe. This is where the final Grand Star is located. It will feature the final battle between Mario and Bowser. Bowser Jr. watches from the sidelines on his airship with the damsel in distress. After this battle, the galaxy transforms into a black hole and begins sucking in everything. The White Luma is also sucked in, saddening Mario.

Traversing the Galaxy

The galaxy contains seven planets (not including the three planets in which Mario battles Bowser). The first is a planet with spotlights that change the direction of gravity. This planet is reminiscent of the castle. The second is a spherical planet with a lava core and a few rocks. This planet is reminiscent of the flame half of the FreezeFlame Galaxy. The third is the same with an ice core and ice blocks. This planet is reminiscent of the freeze half of the Freezflame Galaxy. The fourth galaxy has a sand core with rocks and firebars. This galaxy is reminiscent of the Dusty Dune Galaxy. The fifth is actually not a planet. As Mario walks along, glowing blocks begin to appear, forming a path. This is reminiscent of the Star Junk Galaxy. The sixth is a cylindrical planet where Mario travels through the lava-filled core. This planet has Bullet Bills and Banzai Bill. The last planet is the pathway toward the battle between Mario and Bowser.