u/FloosWorld

In the PUP build, when you click on the ranked button, you are greeted by this screen. Cloosing one of the three options above lets you play 3 games against the AI on Arabia, Arena and Hideout and determines your starting Elo for the placement games.

Credits to Rat from the AoE server for telling me about it.

Edit: typo in the post title, obviously.