The Sacred Rings:
I'm in the library inside the Keeper's palace. So far this game has been a nice experience, story's working a lot better than in Aura, the graphics is breathtaking and the puzzles are very much to my liking. I've had to use a walkthrough a couple of times (at the graveyard) when I just couldn't force myself to work a complicated puzzle out.
What bothers me is that some details reminds me of Myst games, it's almost embarrassing: rollercoaster railways like in Riven, the way the flooring of a passage has almost the same patterns as one similar in Myst Exile (Voltaic), crystals like in Myst Reveation's Spire. It's like asking to be called a Myst-clone.
*shrugs*
This game won't go into my top ten games, but it's a nice game full of puzzles and that's just what I'm in the mood for right now.