Rise of Mankind: A New Dawn is a new sequel of the great Civilization IV: Beyond the Sword game. A New Dawn serves as a new expansion, adding a huge and balanced new technology tree, putting emphasis on new buildings, new units and new technologies. Based on the incredibly popular former mod Rise of Mankind, A New Dawn transforms Civilization IV, reaching to new heights and giving the players the best Civilization experience of all time. It contains a powerful and vastly superior new AI, charismatic new leaders and a new revolt and revolutions system. The huge amounts of new content also includes an advanced and reworked diplomacy system, a myriad of new automation options, an adaptive difficulty, and many other enhancements.
I can't fairly give anything above a 4 to a game that persistantly crashes before it can be completed. I suspect those that gave the game a 10 haven't actually played it through. If the mod actually worked I'd certainly give it a 9 or 10.