Bejeweled 3's Ice Storm mode takes place in Antarctica or Greenland.
I mean, think about it. Aside from Canada, what place is known for being extremely cold? Adding to this theory is that there's 'Diamonds' in Antarctica, and there's a variety of gems in Greenland.
Every main Bejeweled game represents an era of Popcap's history.
The first game marks the beginning of Popcap, since it's their first successful game. The second game was released in their peak, considering the amount of games that they released up until 2010. The third game marks their fall, considering that they were bought by EA a year later, and they changed their ways as well.
If Popcap created Bejeweled 4, they would likely depart from EA and change their ways again.
