Doom 3 was touted[1] as having some "exceptional beauty." Naming, spacing of properties, consistency, and how multiple parameterized calls were formatted are quite nice. You can see an example on github[2], but for some reason the spacing is a bit off in the web view. I'd recommend cloning a local copy and taking a look.
[1] http://kotaku.com/5975610/the-exceptional-beauty-of-doom-3s-...
[2] https://github.com/id-Software/DOOM-3/blob/master/neo/game/a...