The Earth is under attack from evil aliens from the planet Titan! It will take an army to stop them, but all you've got is your trusty ship and a good trigger finger! Use the bounty money that you earn to buy awesome ship upgrades and weapons. Destroy all spaceships in the challenge levels for bonus prizes! Defeat five merciless motherships as you drive the Titans back across the Solar System to the final showdown on their home planet! You never know what you'll see next when Titan Attacks!