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Co-developed by Irrational Games Australia/2K Australia.

I don’t claim it as much as some Australians, but there certainly are a lot of Australian references sprinkled in like the little sisters calling big daddies “Bubbles”.

I’d mostly give credit to Irrational Games/2K Boston, but let’s say a 62/38 split with most of the credit going to the main USA, but the Aussie studio rounding it out into something fuller with their additions.