Super Mario Galaxy is the spaciest space game of all time.
To be fair, it doesn’t seem that way at first glance. Mario is a plumber from Brooklyn by way of the Mushroom Kingdom, which isn’t the kind of CV you need to get into NASA. The planets have nonsensical and inconsistent gravity, the stars have big cartoon eyes and goofy singsong dialogue, and all of outer space is ruled over by an amazonian princess with a magic wand. But, beyond all the parts of Mario Galaxy’s space that put it squarely in the Disney afternoon sector of the universe, its mechanics are not only what make it unique among platformers, but the only game I can think of that’s both about space, and actually feels like it earns it.