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An original concept for Aang had him coming from a Futuristic Sci-Fi world, with Aang being the last suvivor taking him 1000 years into the future as the world reverts back to a more ancient time. Momo would also be a robot cyclops monkey which sounds pretty cool (not that we'd ever want to change him).
Brian Fargo the co-creator of the Fallout series, went on record to confirm that the Vault Boy Thumbs-up depiction wasn't to see how close you are to atomic bomb blast (if it's bigger than your thumb you're in the radiation zone). Vault Boy simply has a 'Positive Attitude'
Throw coins into a crowd and female bystanders will sometimes shout "Money! That's what I want!", a reference to the Motown classic of the same name.
Look closely at the official seal of the City of Los Santos, which appears on the side of every LSPD patrol vehicle, and you'll spot a small illustration of Bigfoot tucked into the bottom right corner, a quiet nod to the series' long-running cryptid mythology.
