There are no secret island for test drive unlimited
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There is no way to get to the secret island on Test Drive
Unlimited PSP. Sony has not put any teleportational devices in this
game to get to the island for the PSP and PS2.
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Well there are a few good cheats on www.rnolan.webs.com but not
for unlimited money.
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Island 4...
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you get unlimited cannonballs. as for cannons, they come with
the ship.