Just take the Quarians. In Mass Effect Tali talk about like on a quarian ship and how they didn't need suits onboard.
Cut to Mass Effect 2 and nope.. everyone is in a suit, and they only show themself out of a suit while being intimate.
then there is the Prothians who we saw several statues of in Mass Effect and come Mass Effect 3 ...... ok I won't spoil it..
Long story short
The Mass Effect Universe is awesome. but that awesome? no fucking way.
Current Favorite DC Book: Calendar of Small Events
Current Favorite Marvel Book: Hawkeye
The principle itself is a variation on the contemporary theme of artificial intelligence, though taken further than almost all examples that come to mind, except perhaps for Asimov's I, Robot, or "Super-Toys Last All Summer Long", though those simply didn't have the scope of a whole race of created sentient beings and the results of their replacing their creators. Especially Mass Effect 2 shows a great coming of age arc of a whole people, with the special representative of Legion, and the fact of robotic people actually developing a religion is especially interesting. The only account of robots showing a development into sentient beings that I can think of that is more realistic and gritty than the Geth would be in Naoki Urasawa's manga "Pluto". Which, funnily enough, is a continuation of Astro Boy, which in itself is a strong story of militarisation of robots vs the life-like qualities of AI, the conflict at the core of the Geth.