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Defender
Websites
Provides FAQs covering characters, ships, enemies, structures, units, and weapons, with walkthrough.
http://www.gamefaqs.com/console/ps2/game/15123.html
Summary of cheats and codes.
site exerpt
Defender Cheats Gamecube eLook Video Game Cheats If you need a little extra firepower for your ship, look for a tank and pick it up. As long as you are holding the tank, it will act like a rotating turret for your ship and fire upon any...