Dr. Kylstein's Tileset Editor
Keen 1-3 written by Dr. Kylstein for the Win32 platform. (With source code for compiling to other platforms.) It is used to change the properties and appearance of the tiles used in Keen 1 with the Vorticons 2 patch.
This is necessary as the patch alters the layout of the tileset and tileinfo;, allowing one 910-tile tileset for every different level in Keen 1.