It would be nice to have a save option (that is, to save the game, close, and continue where I left off later), at least on download versions (I know the web version might have an issue with that).
It is in the plan, but we had not gotten around to fully implementing it yet. We've done web saves before and they generally work fine. The core logic is in our default template, so we just need to add the data to save. I figure it will auto-save when you get to the station, and again just before you leave. We may also add an option to disable auto-saves, and manually save when exiting, but based on those two points.