FableForge.Org is (among other things) a game-maker. You can create your own games online and share them with people; no programming knowledge necessary. What kind of games? Point-and-click Adventure/RPG types -think of those old "Choose Your Own Adventure" books, and think of MYST, or the Dracula series: put the two concepts together and you got FableForge.
Before you ask: yes, its free; we're supported by donations. Of course, you don't have to be a game maker; we're perfectly happy with you just enjoying the games and leaving some comments.
Are you the show-me-don't-tell-me type? Well, within the first few minutes of this video you will known whether the whole thing interests you or not. If yes, feel free to stay for the rest of the ride; we've got a wiki, some boards, and of course games. We're always evolving, and I hope you'll join us and enjoy this new way of telling stories.
--Marco
