The developers of PSPokémon are now working on PSPokémon Online. Game is is being developed in C(and Lua). This version is already signed, running on OFW. To test it needs a betatester key.
Wifi Battle (maybe - depending if it needs server or not)
Still lots to be done, join to the team and help in developing
Download and participate in the development of the game(in the forum has the source code).