Probability 0 is a downward-scrolling infinite arcade platformer. There are a million ways to fight for survival. Descend: as you combat the darkness, improve yourself. Build yourself up as a star-thrower or a teleporting menace. Learn to traverse the pit’s many dangers, from threatening monsters to unforgiving gravity. Walk across spikes that once frightened you. Punch through walls that would have doomed you. You’ll never be invincible. Descend: enemies grow more numerous. They will destroy the floors beneath your feet, spit death at you, and cannibalize and infect each other in their mad swarming. Your foes will be invisible, or reckless, or explosive, or seemingly untouchable. Deeper dangers will always find a way. Descend: and die, as you did last time and as you will next time. But find your way deeper. There are a million ways to fight for survival. There is no way to survive.