|Preceded By||Red Dragon Island|
|Succeeded By||Mystery Train|
Shrink Ray Island is the 20th island on Poptropica. A sound-updated version was released on 20 November 2014.
A young genius has invented a ray gun that shrinks anything it touches - including you! But when the scientist and her invention go missing, you'll have to keep the shrink ray from falling into the wrong hands, and find a way to bring yourself back to normal size. To solve a problem this big, you've got to think small!
- The River City Rodents are very popular and are seen in the Sluggers store at the Twin Palms Mall (Night Watch Island).
- A Shark Boy plushie is seen in CJ's dresser, and a Dr. Hare plushie is seen on her bed.
- CJ's laptop password, "M4R13 CUR13", is "Marie Curie" in leet, an internet trend of replacing letters with numbers or other symbols.