1 exit.
The level has a red light filter when certain mechanical/platform sprites can't move, and a green light filter 
when they can move, similar to Stop and Go Station on Donkey Kong Country. You can set for a few seconds the red 
filter with the on/off switch.
IMPORTANT, epilepsy warning: in the transition between filters the screen flashes between the two. I have tried to smooth the effect as much as I could, but it 
still can be a slight nuisance for some people.