This contains "Dog Fight", a WW I biplane shootdown contest, written by Trevor Taylor. It includes source code. A joystick is required to play the game. DOGFGT.PRG also appears on these disk images: multi_peripheral_interface_demo.ccvf (dogfgt.prg;02 -- different) joystick-sideA.ccvf (exact match) joystick_sound.ccvf (exact match)