first off, shadowheartsfan was wrong. the stories in all of them are amazing.
second, of course it was on the saturn. that was its original release system. in fact, there were 2 grandias on the saturn. grandia and grandia digital museum.
and yes, grandia online is true. im not sure if it's out yet or if it is still in the beta, but i do know the beta has been out since july of 09. just hoping it'll come to the states.
and theyre not going to release grandia 4 on the wii. not even close. if anything, it will be on the ps3 exclusively. they have had ties with sony ever since sega went out. obviously since they ported g2 to the ps2 and released the next 2 games on the ps2 only. the only thing nintendo had w/ grandia was parallel trippers on the gbc, but that was a totally different branch that made it.