Level Design of Legend of Tux

Download Mappy: http://www.tilemap.co.uk/mappy.php

Extract the zip file to a directory

Start Mappy

Select File => New Map

Use the following settings

Press "OK"

Press "OK" to the warning

Select File => Import

Navigate to the project directory, and select the "tiles.bmp" file in the images directory

(Use Gimp to modify the tiles.bmp file to add new tiles, if needed)