Purple barrier

Purple barriers, also called purple gates or purple walls, are surfaces that cause the player to drop any held items and terminate any in-progress recording or playback. However, it is possible to teleport through a purple barrier without dropping items. Purple barriers do not stop lasers (but blue doors do).

Every puzzle has a purple barrier at its entrance. Immediately after entering a puzzle through this barrier, the name of the puzzle appears on screen (this generally does not occur when entering a puzzle by other means, such as climbing over a wall or glitching).

Puzzles

The following puzzles use purple barriers:

Aerial Warp

Alternator

Ascent

Automatic Doors

Backward Propagation

Balance of Force

Bridging the Gap

Chicken Flight

Concatenation

Crossing the River

Domino Effect

Duet

Elements

Elevation

Equilibrium

Eye of the Needle

Hall of Windows

Hidden

Keeping Connections

Lateral Thinking

Loop

Minimalism

Nuisance

Other Side

Outside the Box

Passage

Peephole

Permeability

Phase Entry

Photon Sail

Positional Interchange

Preconnected

Preliminary

Propulsion

Quantum Tunneling

Question Block

Reconnaissance

Refraction

Remember

Sequence

Step by Step

Switcheroo

The Escape

The Gift

The Intruder

The Snatchback Maneuver

The Wall

Through the Door

Transfer

Transposition

Vastness

Wellspring

Yield