For me, I get simple ideas from playing other games. Like if it's a game I really like, then I start to want to make that kind of game, but with a different story and everything of course.
When making huge stories, I often rely on cliche ideas for inspiration. I would usually write something down and then rephrase them to make it sound better.
Ex: The 3 gods created our world using the laws of physics, nature, light and darkness.
The 3 gods who created the world set into motion laws that would balance the order of life. One controlled the laws of physics, the other one created the laws of nature and the last one made the law of light and darkness.
If I really like the idea I just came up with, then I use it as a guideline to build everything behind it. If not, I go on and try a different idea.
When making huge stories, I often rely on cliche ideas for inspiration. I would usually write something down and then rephrase them to make it sound better.
Ex: The 3 gods created our world using the laws of physics, nature, light and darkness.
The 3 gods who created the world set into motion laws that would balance the order of life. One controlled the laws of physics, the other one created the laws of nature and the last one made the law of light and darkness.
If I really like the idea I just came up with, then I use it as a guideline to build everything behind it. If not, I go on and try a different idea.