Looks like there is a brand new GoMoku game that comes in the form of GoBang. This is basically a traditional oriental game that is played with black and white colored stones on a 15 x 15 GO board.
GoBang enables all you Pocket PC and Smartphone owners to go head-to-head with the computer AI. Unfortunately, there’s no word if you can have a match with another human. To miss this feature would be a glaring mistake on the developer’s side as there are only so many times you can beat the AI before you chuck the game aside.

For more information, head on to the game developer’s website (it’s in Japanese).