Systems and methods to provide a mobile computing platform as a physical interface for an interactive space are presented herein. The interactive space may be experienced by a user of a host device (e.g., headset). The interactive space may include views of virtual content. A position and/or heading of the mobile computing platform relative to a perceived position and/or heading of the virtual content of the interactive space may be determined. Remote command information may be determined based on the relative position information and/or user input information conveying user entry and/or selection of one or more input elements of the mobile computing platform. The remote command information may be configured to effectuate user interactions with the virtual content in the interactive space based on user interactions with the mobile computing platform.