How… why… what? I mean come-on, it's a game that thrives on creating a haunting, lonely atmosphere with puzzles to solve, often through a lot of thought, reading, exploration or just plain frustrating trial and error, how in the hell are you supposed to adapt that to a TV series? My money's on it either being boring, stupid or both.
They really just want to cash in on the Myst name, probably to make something a bit like Lost. A mysterious steam-punk style series could be great, but if they force it to have the Myst name then it's probably just going to alienate fans and make other people wonder why they should watch it as soon as they find out it was a video game, just seems like a really bad idea.