Galactic Chase

_Galactic Chase_ is a Galaxian variant. The player controls a space ship with
a simple task: kill all alien invaders. The ship is restricted to horizontal
movement on the lower part of the screen – while the enemy formation sticks to
the same movement pattern, occasionally one or more ships break out and attack
the player directly. If they (or one of their shots) hits the player ship, one
of the three lives is lost. Additional lives are earned after 7000 points are
earned or after a set amount of levels is passed.

The goal of the game is to achieve a high score; the four kinds of enemy ships
give a different amount of points. When they are attacking, their point worth
is doubled. The three difficulty levels can be set before beginning a game or
it automatically increases after ten levels have been finished. Level two
makes enemies faster and level three the own shots slower. Multiplayer is a
high-score comparison.