Let's Play realMyst ME 18: Rime
Were this the original game there wouldn't be this video but realMyst continues a little further with another age, one that neither Sirrus or Achenar knew the location of the book for. Perhaps they had already thought this age lost before they began their actions that would result in them being trapped in the books you find them in at the beginning of the game. The final age isn't a very long one but the first puzzle is one much like in the beginning, figuring out how to find the linking book in the first place.
Once we're there we're presented with a puzzle much like in the other ages but this one is a lot more contained then the others, the clues hidden in text rather then plain sight. Still, it's a puzzle that we'll need to solve if we want to see the final piece of content the game has to offer us.
This video was recorded while recovering from a nasty cold that made my voice hoarse. While my voice is on the mend at the time of writing this it was not 100% at the time of recording.