Aquaria: Yay or Nay?

[Grumman]

I saw this game advertised on Steam, tried out the demo, and am now considering buying it. Has anyone played it?

I have a few questions about the game:
1. How big is the game compared to the demo? Is it big enough to make the cost worthwhile?

2. Is there anything I need to know about buying the game from their website? Do they use any annoying DRM or prevent the use of download managers?

[Carnick]

It's big. Too big, for me. The world is so non-linear and labyrinthine you can spend an hour swimming in a direction you're not even sure you're supposed to go. But some people like that kind of thing, so if you have the time and willingness to explore then go for it. The art and music are beautiful, but the level design got too convoluted too quickly for my tastes. Not sure about the DRM.