ZooCube - Platform: Gamecube

Ending bonuses
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Successfully complete the Pacific Ocean level under the classic
difficulty setting to unlock the gold difficulty setting and the
Gulf Of Mexico bonus level.

Successfully complete the Pacific Ocean level under the gold
difficulty setting to unlock the platinum difficulty setting the
gold difficulty for the Gulf Of Mexico level.

Warp Speed setting
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Successfully complete the Pacific Ocean level under the platinum
difficulty setting.

Hint: View all animals and items
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Start a new game then go to "Help". You can see all the animals
and items.