Stratagus [freeware]
Posted: Tue May 22, 2007 2:35 pm
[url="http://stratagus.sourceforge.net/"]Stratagus[/url] is a free cross-platform real-time strategy gaming engine. It includes support for playing over the internet/LAN, or playing a computer opponent. The engine is configurable and can be used to create games with a wide-range of features specific to your needs.