Ever had a TV show that’s so well done and suspenseful that you just can’t wait for its day of the week to roll around so you can see the next episode (24‘s first and second seasons were like that for me–it’s still good, but not as good)?
Well, Planetarium is like that, only it’s an online puzzle. It takes 12 weeks for you to get every installment of the puzzle complete with intriguing revelations along the way, and by then you will hopefully have solved enough of the puzzles to reach the final answer, which is rather artfully chosen. (There are three puzzles each week–one number, one word, and one other one that I don’t remember what they call it.)
I played through it back in college (probably 1998), and am considering playing through again. Maybe I’ll meet up with you in the xiii Forum.