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The 9th Island was Astro Knights island released in 2009. (see the related question)
Wimpy Wonderland Red Dragon Island Counterfeit Island Mythology Island Astro Knights Skullduggery
If you land back on Poptropica, your spaceship is parked atop the castle. This is also its location when you have beaten the island.
Defeating Mordred and his warrior suit wins the island, and you receive the Island Medallion and 50 Poptropica credits.
The only monsters to beat with a bomb are on Astro Knights Island. (see related question)
There are robot creatures on Astro Knights island, and you use the Mystical Weapons of Arturus to defeat them on the three planets.
just type in "HOW TO BEAT ASTRO KNIGHTS IN POPTROPICA" in the 'enter a Q or phrase...'!
The 10th island, not counting the Haunted House, is Counterfeit island. (see the related question) Haunted House was released after Astro Knights Island in late 2009.
On Poptropica, you can only beat an island once to receive credits. But you can play an island over again by opening the small map at upper right and selecting "restart island" (blue button).
When the Binary Bard appears on Astro Knights Island, he is in animated scenes, not as a character, so you could not have copied him anyway. The costume may be on sale eventually in the Poptropica store (which is the only way you could use it more than once).
he doesn't visit the inn at all,at least not during the time you are trying to beat astro knights island
all you get is the island medallion and 100 credits