Mac Os X 80's Arcade game called Galaxoid: A Retro Space Shooter

Galaxoid is a fast paced retro space shooter based on arcade games of the 80's.
It's all about high scores. 50 levels, 5 bosses and Game Center Scores and Achievements!
https://itunes.apple.com/us/app/galaxoid-retro-space-shooter/id859737216?mt=12