It's been almost seven years since I worked on this but I'm getting back to it finally.
There is no new functionality in this release it is simply an upgrade to newer OSes and newer libraries. The last time I built this it was on Windows XP and RedHat Enterprise Linux 5 and used wxWidgets 2.8 as the GUI library. This version was built on RedHat Enterprise Linux 7 and Windows 10 using the wxWidgets 3.0 GUI library.
Another change is that I've moved the code to a public GitHub repository. So if you want, you can look at my really ugly source code. I started on this project way back in 2005 as a way to learn GUI programming and C++ and my code definitely shows its age. If you're a developer and want to contribute feel free to clone the repository and submit pull requests.
If you find problems with the game, I am now tracking issues on the GitHub repository as well. Check out the issues page to see if the problem is already listed. You can add new issues as you find them or comment on existing issues. Also use this area to submit feature requests.
Anyway, here are the downloads. The executable files (SSW and BattleSim) are in the bin directory and the old User's Guide (an Open/Libre Office document) is in the doc directory.