Still on the fence about buying Icarus? The demo can give you a small sample of Icarus' system of making decisions and get you introduced to the plot of the full game. The demo will take a few minutes to complete, but the full version's story will take you about half an hour and can be replayed for several different endings. The full version also includes the Treasure Hunt mode with randomly generated levels and scoring system!
Seemns interesting, I'll be giving this a look once I get time.