LEGO terrain

A hilly baseplate from a few settings: the model, the parts order, the instructions and a plan of every layer, as one zip.

seed the same seed and settings always make the same board; leave it out for a new one

baseplates how many 32 x 32-stud baseplates the board covers, across and down

across down

road width in studs of a flat road across the middle of the board, rounded to a whole stud; 0 for no road

hills how many hills; leave it out for enough to cover about a third of the board, so fewer when they are bigger

radius each hill is an oval whose two radii are drawn at random from MIN to MAX studs. A hill's height follows its size, about 0.85 x slope plates per stud of radius, so wider hills stand taller

min max

max-height no hill stands taller than this many plates; a hill big enough to pass it gets a flat top instead

min-sep the least distance in studs between the centres of two hills; closer hills merge into ridges

slope how steep the hills are: the steepest the ground rises, in plates per stud. Lower makes gentler, lower hills; above about 0.9 the edges of a layer need many 1 x 1 parts

bricks yes: wherever three layers of plate stack up untouched by a wedge, use one brick instead, which costs less; no: plates only

seams yes: no part crosses from one baseplate to the next, so the finished board lifts apart into its baseplates

colour every part in this colour, using only the parts made in it, as Rebrickable names them: Green is what LEGO calls Bright Green. Made is not the same as on sale; Pick-a-Brick says which are