I really enjoyed (and still occasionally play) Russian developer Playrix's Call of Atlantis on the iPhone. It's a pretty straightforward match-3 game that nevertheless has a lot of appeal. Somehow, the pieces (including some weird-shaped boards), certain items that you need to release from the grid to match up and some special power-ups are tuned just right so that I find it more fun than most games of the type -- it's almost as great as PopCap's own Bejeweled. And now, the company has released the next game in the series, Rise of Atlantis as an HD version on the iPad.
It's worth checking out, especially if y