Hi, Talking about multiplayer games for Blackberry, Palm OS, Windows Mobile (PPC and Smartphone) and soon Symbian you would probably be interested in having a look at Real Dice titles. Here are some info about it:
All game titles run on: Blackberry, Palm OS, Windows Mobile (Pocket PC & Smartphone), with Symbian (including 3rd edition) supported by Feb. 07.
All games feature both single player modes & live online multiplayer. Current games include: Texas Holdem Poker, Sudoku Master II, Backgammon, Chess, Mahjong and Dominoes
All games include social community features like chat, buddies list, messaging, prize tournaments, custom avatars, etc.
Real Dice games have been recognized by all major industry players to be the Best In-Class for Smartphones Handango Developer of the Year 06, Handango Game of the Year 06, Most Smartphone & PPC Mag awards, etc?
Customers can purchase the games as stand alone products or subscribe to Real Dice World, the only subscription-based gaming community for Smartphones that gives customers instant access to ALL Real Dice games, including free monthly releases and additional premium content.