This app was mentioned in 2 comments, with an average of 2.50 upvotes
Virtual Kaiju 3D, a city destruction rampage game (trailer on YouTube) played with a Godzilla like monster/kaiju for Android/iOS has a VR mode where you have to roar very loudly into the microphone to make your monster spit fire to take down helicopters. The developers were obviously looking for a way to make using VR look even more dorky, so they decided to have players walk around and randomly roar at invisible objects. Design objective achieved.