I have been playing Age of Mythology for around 7 years and the only thing I can say about it is - "it's the best RTS games I have ever played!". Its simple tech-tree system allows any user of any age can enjoy AoM.
AoM contains a gripping story containing mythical gods and creatures, you travel from the face of the Earth down to Hades' Realm.
A game with simple 'point and click' action and a gripping story?! AoM is definitely a best-buy. It's old, yes - but that doesn't change the fact that it's a game you will come back to for years to come.