A respectable port of Age of Empires II: Definitive Edition invades macOS
The port seems solid, and all DLC is supported—but there's no crossplay, sadly.
Despite all the graphics capabilities of modern Macs, being a Mac gamer is generally a thankless existence. Every once in a while, though, Mac gamers get a bone thrown to them that is substantial enough that they think, for a brief moment, everything might be OK. One such bone has been thrown to us today—Age of Empires II: Definitive Edition just came out on macOS.
The game is available on Steam (those who own the Windows version on Steam automatically get the Mac version) and is planned for a later Mac App Store release.