lemsop

A level editor of Prince of Persia for the Master System. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Download

This is an ALPHA version. It is not yet
feature-complete and contains BUGS.

> GNU/Linux

version 0.7a

> Windows

version 0.7a

Screenshots

lemsop v0.7a thumbnail

Documentation

My apoplexy level editor uses a similar GUI.
See its instructional videos.