From an aesthetic perspective, I think the choice to use a human voice to recreate the sounds of the game was a great touch. It adds a whole different layer of whimsy to it.
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LINK TWO: You know those moments when Flaco is riding Arthur who in turn is riding Oso? (Here, for example.) And you thought was was fake! Well check it out, it exists in the real world!
My favorite moment: When the cat is licking the rat, as the rat is licking the cat. That's ridiculous and awesome at the same time.