Control Room

After passing the last of the Challenge Islands II, you'll encounter the Control Room, home to the final boss of the Challenge Islands II. The final boss is the Anti-Gravity Rings, a group of rings that can randomly change the gravity (and electric fields on the edges which will inflict 300 dmg and Electrified). Other than that, not much other than the fact the rings only have 1 opening (except the last one, the one you are on) if it didn't take any damage.

Contact will bounce.
 * HP: 82847
 * Atk: Electric fields (explained above).
 * Def: 70

Phase 1
82846 - 70001

One opening per ring.

Harmless Phase
The ring at the very edge has no openings.

82847

Phase 2
70000-50000

Three openings per ring.

Phase 3
Five openings per ring.

49999 - 29999

Phase 4
Seven openings per ring.

29998 - 1000

Phase 5
Nine openings per ring.

999 - 2

Explosion Phase
If not damaged within 10 seconds, it will explode, resulting in an instant defeat for the player.

1