ceferino binary package in Ubuntu Focal amd64

 A game similar to 'Super Pang'. You are attacked by little green balls which
 are bouncing around and which you have to destroy with your knife. Your knife
 however is limited to being thrown upwards, thus you have to get under
 the balls to destroy them. Even worse, if you destroy a large ball, it doesn't
 just vanish, but breaks apart into two smaller balls. Levels consist of little
 platforms connected by ladders, so you can go up and down or find cover
 if needed.

Source package