Hi all, I would like to watch the recorded games such as this one https://www.voobly.com/match/view/21129405, when I download the link, it's a .mgz files, and I haven't found a way to open it. Could I get some help or advice please?

Save it in your game installation directory/SaveGame. Open a Voobly Game Room, click settings next to the launch button, choose "watch recording" and select the rec from the list. Then launch the game.

Is that also correct for AOM2...?

No recordings found

Just save your downloaded game at this address: C: \ Program Files (x86) \ Microsoft Games \ Age of Empires II \ SaveGame

Then create a new room, in the room settings you will find an option that says "watch recording" select the game you download and that's it.

As a recommendation, rename the file of the game you downloaded to be able to identify it faster.