Zuminja is a Ximad hit that’s similar to Zuma. They’ve had a paid version available for two weeks and now there’s a free version. While they don’t specify the difference it appears as though it’s less levels so if you get hooker you’ll have to pay to play. Anyway, the reviews for the free version are all solid and no one is complaining of a limited trial so expect a decent amount of game play here.
The paid version ($3 with a trial) is available here and the new free version can be found here.