Tales of the Tohunga:
You play as Takua (or whatever you name yourself) to find Toa stones to get the Toa to Mata Nui, as well as saving Turaga and getting cool stuff.
MNOLG (Mata Nui OnLine Game):
Basically, you play in mostly FPS as Takua after the end of Tales of the Tohunga, as he goes through all types of adventures saving villages, helping out, and stuff.