It would be pretty cool, but it would be a lot harder to pull off. At this point the thought of having to be responsible for another server doesn't sound like a lot of fun to me, and preventing users from writing programs that suck up all the CPU cycles is really tricky.

Plus I really want to focus on the storytelling aspects. Especially the end-game scenario (see spoilers/readme.md if curious) would be extremely problematic to implement in multiplayer.