Depth Charge (video game)

Depth Charge
Screenshot and description from The Elektrik Keyboard catalog
Developer(s)	Chris Oberth
Publisher(s)	The Elektrik Keyboard
Designer(s)	Chris Oberth
Platform(s)	Apple II
Release date(s)	1978
Mode(s)	Single-player

Depth Charge is a game for the Apple II family of computers, created in 1978 by programmer Chris Oberth and published by The Elektrik Keyboard of Chicago, Illinois.^[1]

Game play

Like the 1977 arcade game Depthcharge that it emulates, Depth Charge puts the player in control of a small ship that drops depth charges onto passing submarines. The ship makes three passes from right to left across the top of the screen, and four submarines at varying depths move from left to right below it. Destroying deeper subs earns the player more points; one extra pass is awarded at 600 points another at 900 points. The screen inverts in overtime. Hits, misses, score and high score are displayed at the bottom of the screen.^[1][2]

References

1. ^ ^{a b} The Elektrik Keyboard (catalog). Chicago, Illinois: The Elektrik Keyboard. c. 1979. 
2. ^ Chris Oberth. Depth Charge. (The Elektrik Keyboard). Apple II. (1978)