EasyRPG Player is an open source implementation of the RPG Maker 2000/2003 engine. Get a RPG Maker 2000/2003 game and place the Player (boot.dol) in the root directory of the game (that’s where RPG_RT.exe is). The program has no file browser, each game really needs its own boot.dol!

http://www.wiibrew.org/wiki/EasyRPG_Player