DeBuild is a DOS level editor programmed in QuickBASIC for Duke Nukem 1, the action/sidescroller released in July 1991 by Apogee Software. Some of its features are:
- Loads graphics straight from the original game files, support custom tile sets and backdrops.
- Customizable tilebox: reorder tiles and toggle their display at will.
- 10 episode-specific custom clipboards (copy and paste feature) and tile arrangement.
- Multiple drawing tools to easily design patterns, add detail, and move the whole map around if you run out of space for your construction.
- Automatic management of unique active items such as Duke's starting point and level exit.
- Customizable hint grid display.
- Source code, executable, and quickstart documentation included.