Organize your ideas by sketching game scenes on paper. This way you can show your game concept to others and get feedback to improve it.
Once you have a clear game concept and gameplay, create a storyboard so our team and other game creators can review it and send you feedback.
We strongly recommend to make a detailed storyboard and sketch all game scenes. It helps you focus on your game idea and see what exactly you will have to do to make the game. Here's a good example.