Oh, Dragon Quest has been around since before Final Fantasy. I think the first one came out in 1986. Anyways, you can find the old school DQ games now on Game Boy Color, and DQVII was released for Playstation. Most of them were released on the NES/SNES though.

Gravija was used in FFVIII and/or FFX I believe. They also used 'Ja' for Final Fantasy Tactics.