Worlds Apart

Worlds Apart immediately pulled me in with it's surreal and somewhat haunting atmosphere. The writing is extremely good, and I love how the game is paced; it plays with your perception of time and memory in a way that really adds to the surreal feeling.
The hint system was very nicely done; I appreciated the fact that it gives you a series of hints on each subject, with each hint revealing progressively more about what needed to be done. This gave me the ability to get only as much info as I actually needed from the hints, rather than just a little hint that didn't help, or a big hint that spoiled something.
I do have one minor complaint; I was a bit lost during the "midnight" section, because (Spoiler - click to show)I kept thinking that I had to get something done inside the crystal imager, after Saal had cleared the rubble and the axe smashed the viewscreen. All that actually needed to be done at this point was "sleep". However, this was most likely my fault for not paying close enough attention, or experimenting enough.
Worlds Apart is definitely one of my favorite games, and one of the few I'd list as a "must play".