Want to add one thought to this:
I mention both web and 3D above, which seem like totally different things. In my mind they are not. Many games today are designed for phones, or around a cute 3D tech or VR or whatever. But for me, the game is not in its presentation. A good game is fun irrespective of its graphics, sounds or platform. You can greatly enhance a game with a good presentation, and games like Morrowind or Skyrim are great because of their attention to detail and open spaces and visuals. But the story and the concept would be just as catching and interesting in a 2D view. Even as a point-and-click adventure.
I have one game in design which can work on any platform. I have one other game which requires 3D. And I have one that has two parts (one strategic, one building) where it might work best to have two different interfaces.
