The disclosure pertains to techniques for collaborating in a multiuser communication session, including, at a first device, receiving a request to launch a first application in a multiuser communication session with a second device; presenting an environment of the first application in the multiuser communication session; receiving, by one or more processes of the multiuser communication session, data from the first user, the data including input data and first communications data; providing, by the one or more processes, the input data to the first application; providing, by the one or more processes, the first communications data to the second device; receiving, by the one or more processes, second communications data from the second device; and presenting, by the one or more processes, the second communications data in the environment of the first application, wherein the first application is restricted from accessing the first communications data and second communications data.