The game is good but with online problems
Okay now here's the downside, the online play is very buggy, since it goes through ESO Online. I never like ESO Online, very hard to access, when I play AOE II it goes through the Microsoft Zone, the Zone worked well without any huge problems, I could even play online over dial-up! But on ESO it just doesn't work.
So to summarize
Offline: Excellent, creative home city system sparks a great new way to play RTS, the series is a masterpiece
Online: Buggy, Unplayable at times