Most features of the Developer are accessed through a special menu that is brought up by pressing. They are updated automatically with the base game via Impulse or Steam. There is one for each version of Sins you have, and are named Sins of a Solar Empire Dev.exe. The Developer.exe is a modding tool that can be found in your main Sins of a Solar Empire folder along with the regular game.exe. Tested on Diplomacy 1.21/1.31 against normal/hard AI on a 1v1 map. I finished the change galaxy menu today, I'll add the rest as I have time. Since I noticed no one has really mapped out and explained all of the developer.exe's features, I'd thought I'd do it myself.