I'd be at school, creating levels on graph paper and playing them in my head. Then at home, with the level editor test them out. Some levels really took an hour

I'd be at school, creating levels on graph paper and playing them in my head. Then at home, with the level editor test them out. Some levels really took an hour to play. This was on a C64 with a digital joystick, which I found more playable than on an Apple II with an analog joystick.