This is an idea for an action adventure RPG. Basically the game starts out with a player going through the lives of various people. One is a Hunter, another a Guard, and a third a powerful wizard, each living on different planes. Each time he lives through an entire lifetime with that person from about age 16 forward to thier death. After the initial three lives, his soul returns to his true body, where the skills he learned in the first three lifetimes are useable for him to defeat an "unspeakable evil." Each life contains a large, seperate world, and is in a sandbox style with content specific to the different lives he's living. This is just sort of a wierd concept but I figured i'd toss it out there.

Interesting. There was a somewhat similar thing in Final Fantasy VIII, with Squall & Co. impersonating heroes from the past (Laguna & Co.), as opposed to a separate universe. Also, in the Wheel of Time series (the Great Hunt, in particular), the hero explores his own life in alternate "what if?" universes as a side-effect of a magic artifact. In Prince of Persia Warrior Within, the Prince explores various eras in time, becoming a Sandwraith and meeting his former self at several points.

I believe you would gain much from allowing interaction between the three other people, and allow the player to use them interlacingly (as opposed to sequentially) to better effect.

or if the different planes have interactions. Say there was the same city on all three planes, and you flood it on one plane, it then becomes an aquatic town in all three planes

The three characters cannot really interact due to the storyline of the game.

Basically the main character is sent through the planes by an enchantress as a way of saving his life from an enraged witch.

Each plane is a way of hiding his soul from the witch, giving him time to learn skills, so that he might face her eventually.

Each scene ends when towards the end of the character's life the witch finds him, and the enchantress (who is actually a disgused female character in the world) once again sends him on.

The last world is the one where the character takes on the witch.

However, I think I may allow the character once he reaches the last scene to go back into the other planes as his final self, though the characters there will not know him.

I think that this could be good, but it will need a fairly strong connection between the different characters. Even if they can't really interact, the storyline will have to pull them together somehow. For example, mabye the same evil attacks all three of their lands, and in each one you have to fend it off, but not really defeat it. Something like that (but I'm sure you could be more creative than me :D ).

Instead of having the three 'other' characters existing in parallel universes, you could have them in the same universe, but in different times. I.e while playing as the hunter, you become the ruler of all the land, but then the witch comes and the enchantress sends you on to another time. You go to the future, and you can find out what happened to the hunter you played as after you left him.

This would open up all sorts of gameplay possibilities. You could affect the history of the world (but not really, since history is, in reality, dependent on you changing it) and change who your next character will be. This could lead to all sorts of possibilities for your final character depending on what you did.

And why is the witch trying to kill the main character in the first place?

this seriously reminds me of the intertwining cycles by Moorcock. you know? elric, hawkmoon, eleckase and corum...

they all exist in different universes, all have to fend off some unspeakable evil, and all have to merge in the end...

wonder where you could have gotten that idea...

Actually it came from a wierd dream....

So I've not heard of the game of which you spoke.

He speaks of a series of novels by Michael Moorcock.

Sounds pretty damn cool to put such a thing in a videogame. I direct you to Rudora no Hihou, in which the player can complete the stories of his four characters in any order before entering a fifth, longer story in which the player must lead them against the final evil. This would work similarly, I'd think, only with one character. RnH also had the ability to let you switch between stories-in-progress at any time, I think.

Hm, when you put it THAT way it also seems like Live a Live as well.