There are three separate games ....
Message:We just play Age of Empires 1 ... the original one.
It was labelled as the definitive version and included the what was called the Rome Expansion. So ... just need the one game.
$5.
(I purchased mine from Windows App Store using Brave browser. As Red notes later, you can get it off steam as well.)
Yours,
IronConrad
14-Feb-2021