Ideas For Games

I had two main initial ideas, one is about escaping prison and the other is a 'tomb raider' like spoof, where you have to go into a pyramid and solve puzzles in order to get to the next part, going deeper and deeper, then to complete the game, is to get the treasure at the end.
I decided in the end to kind of combine them both, as they both were lacking. I decided that i want to create a stratedgy game, where the player gets the options to decide whether they wanna leave by day or night for example, and if they choose a bad option, something could go wrong and they would get caught and then the game would be over. I would of course want this to be set in the middle-ages or some old ancient time period.