I kinda wish there was some sort of God Simulator type game.
Basically it would be an open sandbox game where you can make your own dimensions and planets and such. On top of that, you can design every dimension however you want. For example you could just make a carbon copy of Earth with nothing changed while in another universe you can make it to where only amphibians survived the extinction of the dinosaurs and millipedes replaced humans.
Speaking of that, you could give sentience and intelligence to literally anything you wanted and choose how advanced it exactly is so you could give a rock such great intelligence that it would be able to create entire cities just by lifting stuff with its mind.
You could even make your own creatures whether it be a species of tigers with viperfish heads or an entirely new thing in general.
But it doesn't end there, you can even choose to control or influence whatever you want and the choices you make with that thing affect the history of that dimension depending on how big the choice is.
For example you could control some alien from halfway across the galaxy and make them go to Earth, making their presence known and advancing the humans technology by millions of years.
Or you could just make terrorist group in china that is lead by a literal tree frog.
I could go on and on about the type of stuff I'd want to see in a game like that but then this would be a LOOOOOOOOONG post.
To sum it all up: pretty much an amalgamation of Dwarf Fortress, Spore, Crusader Kings, Garry's Mod, Starsector, Kenshi... actually now that I think about it, it would probably every single existing game in one depending on how you approach it.
Either way, unless someone were to find a way to actually transcend to the level of a god, I don't think we'll be seeing a game anywhere near that level of choice and depth in the future.