A set 2D (34x34) tiles, for drawing simple isometric models. There is no need to overlay tiles, simply offset alternative columns up/down by half a tile to match up.

Each tile is surrounded by six others, so there are 2^6 (64) possible combinations. Wang tile maths, using neighbour weightings can be used to correctly draw each tile.

To draw non-solid models, tiles can be 'split', drawn as two separate tiles, so one part of the model overlays the other. After some experimenting, I found that just 16 tiles produce the most used and least ambiguous 25 splits.

I've made a canvas app to create your own designs at http://www.cr31.co.uk/iso/iso.html