–Tutorial popup in Psychonauts
Astral Projection Layers are items in Psychonauts which are found throughout the mental world. They restore a layer of Raz's astral projection- the equivalency of an extra life. They appear as a glowing green version Raz's helmet with red-tinted goggles.
Astral Projection Layers can be found in most of the mental world levels of the game. When Raz runs through one of them, he gains an additional "layer"- in other words, a life. If Raz's layer count reaches zero, he is ejected from a mind. If he is already in the real world and he runs out of projection layers, he is teleported to a different location in the real world.