The distinctive artwork is part of the reason it has endured (and deserves to for longer, despite EA's possible intervention), but it's not the only reason. Mirror's Edge hadn't aged a day back then, and still hasn't.
In Mirror's Edge Catalyst, the sequel that arrived eight years later, the lighting was a little sharper, reflections had more clarity, and the cityscape had a few more details, but mostly it was just as it was.
