If you need the manual or technical "papers" on how to play or mod the game, you can find them here:
If you are looking for a regarding how the software works (such as its voice recognition or flight dynamics), it is important to note that the software itself is a commercial product. 📥 Accessing the Software Tower 3D Pro Free Download
The game is primarily sold through FeelThere , Steam , and Aerosoft . If you need the manual or technical "papers"