I've been playing through the demo, biding my time before I buy Avernum 4. After getting the barrier to the Eastern Gallery dispelled, I got the message I expected: that the demo was over and I would need to buy the game to keep playing. However, I kept walking, and was not stopped by anything. I am now in part of the game that is supposed to be restricted to the registered game. It seems so far that the game is completely playable, except for the lack of terrain/walls. Picture(s) to follow. In fort dunvo