There are several online casinos with exciting slots at

The Age of Discover is just like Jackpot Party.
Dolphin Tale is a really neat slot unlike any other I have ever played.
Major Millions is a lot like Megabucks.
The Marvel Comics themed slots are just incredible with all kinds of cool features with characters such as X-Men, The Incredible Hulk, and Silver Surfer.
You can play these games at the casinos listed on this site.