Alien Abduction for Mac

From Red Marble Games:

A tribute to the classic side-scrolling shooter, Defender. Blast aliens to prevent them from grabbing your power crystals and turning them into nasty buzz-saw monsters with the sole purpose of taking out your ship!

Like all classic shooters, the rules are simple and so are the controls; you can use a few keyboard keys or your favorite joystick. The full version includes 30 levels in three mission packs. Track your own personal high scores, and compare your best with others on the built-in online high score table. Perfect for a momentary break or an extended battle, Alien Abduction will scratch your itchy trigger finger!

• Three game modes: Points Battle, Time Attack, Sharp Shooter.
• 30 levels spread over 3 missions.
• Two player action � battle your buddies on the high score table.
• Awesome powerups to aid you in your mission.
• Tactical depth � attack, defence and resource management.
• Unlockable goodies � extra ships with different abilities.