Mmm... judging from your reply, I highly suggest that you update your game ideas cause right now both sound very broad. Also when I read simulation/strategy, I was imagining games like Civilization or Age of Empire but I am surprised that you actually meant survival games like Don't Starve in that reply.
I said very broad cause you only have something like "game which does this", "game which isn't that" or "game which feature this and that". You need something more specific, if you want a brazilian monster in a horror game, what does the monster do in the game? what can player do in the game? and so on.
If you want to make survival game, what is the main goal? what can or should player do to achieve that goal?