You could try out my Guns of August mod, main post here:
http://www.ageod-forum.com/showthread.php?27011-The-Guns-of-August-Mod-(World-War-I-1914-Scenario)
It's a more traditional AGEOD game but heavily inspired by this game. Only covers the 1914 portion of the war, and doesn't have as much flexibility for things like war plans and that sort of thing, but it's a very faithful and fun 1914 campaign that does a good job of mirroring the opening phase of the war.