Hopbopper, as far as I know, is an original arcade game. In it, you have to kill all the monsters by jumping over them (without colliding with them). You can run and jump horizontally, and you can also climb the ropes on either side of the screen.
Title: Hopbopper
Author: Kevin Derby
Publisher: Public Domain release
Released: 198?
Requires: Color Computer 1,2,3, 16K RAM, tape or disk, joystick.