Outstanding!
I don't have very much to say, I just want to give you some 10-pointers, cuz' I love this series!
Just a mini-mini-tip:
Maybe you should make an opportunity so that you can choose if you want the dialogue to progress with pressing space bar OR having the dialogue timed. I'd still go for pressing space bar - that really is the best way - but some would maybe prefer having it time-based.
And maybe if you choose the space bar option, then if you'd forget to press space bar then you could have a mini-text popping up after a while saying "press space bar". =)
Maybe it's not the most important but I just wanted to give some kind of advice! xD
Keep it up, these series rule over all and everything!!!!