Nothing complicated about this game it's just a simple c# program compiled with Visual Studios Community on Windows 10. Download Visual Studios Community. Install it with Windows Application Development and .NET desktop development. Im not sure if that's all you need tho but try. I also have c++ stuff installed and database and linux embedded packages.
Anyways open the file Space Conqueror.csproj with Visual Studios and press F5 to compile it. Or you can just navigate in the bin directory and find the Space Conqueror.exe file and play the game.
Happy Coding.