Click on a material to select. Place materials on the grid. Press R to rotate. Press Z while hovering over a block to delete. To start a circuit, place a generator and lead a wire out of it. You can lead this into a button, switch, or anything else. You cannot connect wires to wires, unfortunately. To press a button or switch, make sure nothing is selected. You can also press Space while hovering over to activate it, if you don't want to do this. TNT actually chain reacts, a feature I really like. Planks and glass explode in one hit, bricks explode in two hits, and metal is indestructible. DELAY BLOCKS ARE NOT IMPLEMENTED YET.
