I'm still at chapter 3, but I decided to write a review anyway. You should provide options to speed up the conversation even more. The important thing is, why? Here's why:
1. In this mystery type of game, countless possible explanations run through my mind. I'm excited to gallop to the next chapter. Unless you are trying to immerse me into the game, in which case I would love to, but I can't because
2. The explanations I had in mind are not explored. For example, blood stain on the helms? Someone died here from this game like in the movie 'saw'? And the main character could have done more a lot more, he's too passive for me. I mean he should be smarter and either tell the full unbelievable truth, or give hints more subtly so that someone, like Alice, would not be suspicious of him. Also, I would have robbed Liam off his gun earlier. What will happen for each of these possibilities? Also, remember death? What, remember Aria? Time leap? So culprit is one of them. Then is it Riku or Nana, trying to revive Aria using the power to jump to alternate universe? Whoa, freeze body. Then the culprit must NOT be in the pods, reading newspaper, preparing the arena, dragging the others and stuff. One of them must be years older by now. Could they notice someone different?
So you see, for someone new, the pace may be alright to process and marvel at the unveiling of the mystery. But for someone like me, there better be option to speed things up.
Finally, have you checked "no-one has to die."? It's really great and well-polished game about parallel universe and time machine, also here in newgrounds. It's much simpler, but it's much more polished as well.