Not counting Haunted House, there have been 21 islands in Poptropica from 2007 to 2011, including the 21st, Mystery Train Island which opened October 7, 2011.
The 22nd, Game Show Island, will likely be the last for 2011.
(An up-to-date list can be found at the related question below.)
There are many islands of poptropica
9 islands
Many users have finished all the islands. It is not a competition.
fourteen is a hope. the next one is called ********* *******
At the end of 2013 there were 35 islands. For links to the individual island solutions, type "how do you beat ___ island on Poptropica" or see the related questions at the link below.
No one knows, although the people at Poptropica have an approximate schedule. After 4 in 2007, 3 in 2008, and only 2 in 2009, the numbers increased to 6 new islands in 2010, 7 in 2011, and 9 in 2012. There was a separate members-only game in 2011. One island from 2012, Poptropolis Games, was inactivated in February 2013. The first two new islands in 2013 (#32 and #33) were Zomberry Island and Night Watch Island.
There are animals on many Poptropica islands. There is a Safari on Nabooti Island, cryptids on Cryptids Island, and in several quests. See the related questions.
Jeff Kinney and the creators of the concept came up with the name based on "pop" culture in animation, and the "tropical" setting that defines many islands.
There are boats on many of the islands. You would have to identify the island to get a proper answer. (see the related questions below)
24
after you defeat 1 island you get 100 credits. just think of how many credits you can get!
There are 231 days in-between March 4, 2011 and October 21, 2011