Isometric drawing

Isometric drawings are 3D drawings; they show three sides in dimensional proportion. Right angle corners are never drawn; all vertical lines are drawn vertically whereas horizontal lines are drawn at an angle of 30°. You always start with a base line this will be the line you measure the angles from.  

http://chestofbooks.com/home-improvement/woodworking/Handicraft-For-Boys/Isometric-Perspective-Drawings.html#.UKzn-o4wI6o

What is isometric drawing? (accessed 20^th November 2012)

http://toolboxes.flexiblelearning.net.au/demosites/series9/905/2_draw/draw_t3/htm/draw3_2_2.htm

Isometric grid

Isometric grids/ paper is a tool used to aid in drawing isometric perspective drawings. Usually involving dots or lines as guidelines, or indication as to where you should be drawing. I will be using a grid when drawing examples of the environments for our game, to make things a little bit easier and to keep the perspective consistent.