To open multiple projects simultaneously in Android Studio, go to Settings > Appearance & Behavior > System Settings, in the Project Opening section, choose Open project in new window.

Can you open multiple projects in a single studio?

Open two projects in a single window is not possible in Android Studio / IntelliJ IDEA. So, when you open a second project, you’ll have to decide: New projects can either be opened in a new window or replace the project in the existing window.

Can you have 2 unity projects open at the same time?

It’s not possible to open more than one project.