Beware of Pit, in The Cutting Room Floor (Unused Puzzles)
- Chapter 0: New Interference (Insight).
- Chapter B: New idea for Zombie Mode.
- The Cutting Room Floor: Add Cold Roommates, Beware of Pit and (Remix), Acrobatics?, Acrobatics? [VAR1], Acrobatics??. Cut Doormaster (forgot to do this when I published Chapter E). Split (Unused Puzzles) into (Custom Elements).
- Green's World: Add Delay Circuit [VAR1]. Buff Lockdown.
- cl1694's World: Buff The Eclipse Pit [VAR1] (oops). Add Woodchunk (Insight) (oops). Add Kinetic Hotwire [VAR1].
- Bug Gallery: Stricter crash handling in Negativity (all crashes on older versions now trigger Exception Handler, and Exception Handler should not be triggered for anything that was never a crash).
- Fix a bug where broken Light couldn't move from a Phaseboard Heavy/Zombie Tile. v19.3b: Actually fix it.
- Custom Elements: Add Blue Glass Block, Blue Floorboards, Blue Repair Station, One Move, One Move Green, Anchor Point. (Known bug: One Move + Bomb, the Bomb doesn't properly destroy itself.)