Having Adobe Flash Player is actually really important to have available and updated. If it's not updated you can't play any online games like Poptropica or even watch any videos on or off Youtube as it requires Adobe Flash so that you can watch animation and videos on the web.
Here you can download the latest Adobe Flash Player by following the on screen directions here: http://get.adobe.com/flashplayer/
Hope this made sense!! Good Luck!!
