DreamStones is an attempt to adapt the WikiPhilosophy to a video game.
I don't know if something like that has ever been tried before - if you do, please write about it on this wiki :) MUDs and MUSHes come to mind - the main differences would be that
Anyway. This doesn't mean that the wiki-nature of DreamStones will be obvious in the game. After all, Wikis are proverbially UgLy, the interfaces are quite different (tiles and sprites versus text), and so are the goals (wikis are about community, creation and ideas, DreamStones is about community, creation and fun).
So, in DreamStones you won't go to the RecentChanges to see what happens while you were gone. You'll pore over the world maps of the Architects and Engineer's guild, and notice areas of recent activity.
You won't look at the page history and revert to a previous version. No. You'll seize your Amethyst Rod Of Time Splitting, shift to the astral plane and unleash a spell of Timeline Rewriting.
You won't ban a user's IP. You'll set a seal of banishment inscribed with a dreamer's name upon the portals to your island.
And the GameMetaphor is about this. About "disguising" the WikiConcepts into the GamePlay and the BackgroundStory. About adopting the spirit of WikiPhilosophy, but by using a different system.
See ChallengeRooms for an example of how this works.
note : the examples up there aren't in any way definitive. The important part is coming up with a good, coherent set of metaphores. Nothing's settled until the game is really working.