I've had the idea for awhile of developing a game with the theme of an ancient oracle which players would visit during the course of the game, but don't have much more than this right now. The oracle would be a highlight, but not the sole or even a major part of the game. This oracle would, in fact, be somewhat risky to visit, as she could forewarn of negative, as well as positive, events. Another aspect of the game would be favors earned by sacrificing or prayers made to specific deities (similar to the new game Cyclades), but with a somewhat darker theme and more complex mechanics.
Any further ideas on how I could elaborate this basic theme are welcomed. TIA