Yes, I was talking about the SNES Rayearth. I actually started to watch the anime because of the game... but never finished it. Maybe after I finish the thing I'm watching now I will go and watch some nice Rayearth (Honoo no... Ken!).
About the Day of the Tentacle, if I'm not mistaken, it is now abandonware, so... that. BTW, just read that there was a remake of it on the works, which was around 80% done. That is... quite unfortunate.
The Shaman King RPG for GBA. I had some fun with it. It also features spirit fusion, a feature I find pretty similar to ShinMegaten's akuma fusion.
Someone mentioned Shining Force. I once confused a game with it on the GBA (there is a remake of the first SF there). It was called Shinning Soul. It ended up being pretty decent, and there was a dragon guy!
Lastly a game from the original GameBoy. Another Bible. A spin-off of Last Bible, which is a spin-off of the Megami Tensei series. The story is pretty simple, your character is one of those paladin-guys protecting a special girl, but it's fun anyway. I did found it fun at least.
Also I suggest taking a look at the Last Bible series too. They're what happens if you take ShinMegaten and give it a fantasy setting. I know that one of the appealing parts of Megaten is the setting. But it's pretty good too, I feel it has some obscure atmosphere.
Anyway, those for now, let's see if I can remember some more <3,
Orochii Zouveleki