This game can be summed up succinctly by the following sentence:
When you play RTW's secondary expansion - Alexander - you can help but think; 'What could have been...' Quite similar to what I personally think on Alexander's untimely demise at still relatively youth stage.
The campaign is poor. The map was clearly made without either time or consideration. The factions are limited, whilst the units are even more limited. The best fun to be had is playing custom battles, or perhaps the somewhat disappointing historical battle recreations. As a stand alone game, free of the RTW franchise, Alexander may have been considered pretty decent, but when you consider that TCA made this AFTER Rome and the Barbarian expansion, you can tell they were just quickly milking the cow before moving onto another era.
5 out of 10 - If you're burning cash, get it. Otherwise, save yourself the time and money. Subpar expansion.