I like the Zuma/Luxor games a great deal. This one expands on the concept quite nicely with different game modes and items/upgrades you can buy (with game coins) at a "store". The whole thing has a very massaged feel to it. Looks like they spent some quality time on it. Here is
Gamezebo's take on it.
Assuming it's a Mumbo Jumbo game to begin with, here is
the official link. It's all over the other places that carry casual games too.