Croaker is a clone of the arcade hit, Frogger, and it's complete source code, along with the writer's comments, were published as a 6 part series in Hot Coco magazine, in the June through November, 1984 issues. It included a title screen with multi-voice music, 1-4 players, and either joystick or keyboard controls.
Title: Croaker
Author: Mike Meehan (Color Horizons Software)
Publisher: Hot Coco June to November 1984 (6 issues)
Released: 1984 (written 1983)
Requires: Color Computer 1/2/3, 16K RAM, cassette or disk, joystick optional.