When I got to red background it became very hard, I belive impossible . fun while it lasted.
Yeah, the red level is the last one so far. I designed it this way to make it rather quick, but I'll soon push an update which hopefully will make it last longer. As you know, back in the day many games were just endless loops of increasing difficulty, so the goal was to reach the highest score and that's what I was going for here. Thanks for playing and for commenting. :)