Man, the nostalgia hits hard with this one. First played as a child in elementary school, and continued up through some point in middle school before dropping it. I once got a paperback guide from the school book fair to help get me through the different islands; my favorite one by far was Ghost Story Island, not sure why but it was an unforgettable experience. Nowadays the old islands are gone, and my account was deleted due to inactivity, but I'd give anything to access it once more, just for memories' sake.

1. Mythology Island (4/5 Stars)
2. Astro Knights Island (4/5 Stars)
3. Great Pumpkin Island (4/5 Stars)
4. Super Power Island (4/5 Stars)
5. Poptropolis Games Island (4/5 Stars)
6. Reality TV Island (4/5 Stars)
7. SOS Island (4/5 Stars)
8. Survival Island (4/5 Stars)
9. 24 Carrot Island (4/5 Stars)
10. Spy Island (4/5 Stars)
11. Time Tangled Island (4/5 Stars)
12. Counterfeit Island (4/5 Stars)
13. Cryptids Island (4/5 Stars)
14. Game Show Island (4/5 Stars)
15. Shrink Ray Island (4/5 Stars)
16. Nabooti Island (3.5/5 Stars)
17. Early Poptropica Island (3.5/5 Stars)
18. Jade Scarab Island (3.5/5 Stars)
19. Shark Tooth Island (3.5/5 Stars)
20. Goofball Island (3.5/5 Stars)
21. Fairy Tale Island (3.5/5 Stars)
22. Ghost Story Island (3.5/5 Stars)
23. Twisted Thicket Island (3.5/5 Stars)
24. Big Nate Island (3/5 Stars)