Elements
The current version of The Powder Toy contains 13 categories of elements.
Contents
Walls
Electronics
Negative Temperature Coefficient Thermistor
Positive Temperature Coefficient Thermistor
Sensors
Force
Explosives
Gases
Liquids
Powders
Solids
Radioactive
Special
Game of Life
Hidden Elements
For more information on specific elements, it may be helpful to look at their specific page, their category, or this element list.