Phoenix is an outer space-themed, fixed shooter video game similar to Taito’s Space Invaders. It was developed by Amstar Electronics (which was located in Phoenix, Arizona) in 1980, and released by Centuri in the United States and by Taito in Japan.
The Phoenix mothership is one of the first video arcade game bosses to be presented as a separate challenge. This was before the term boss was coined.
The player controls a spaceship that moves horizontally at the bottom of the screen, firing upward. Enemies, typically one of two types of birds, appear on the screen above the player’s ship, shooting at it and periodically diving towards it in an attempt to crash into it. The ship is equipped with a shield that can be used to zap any of the alien creatures that attempt to crash into the spaceship. The player cannot move while the shield is active and must wait approximately five seconds before using it again.