To let viewers see you interacting with the game, you're going to need a green screen and at least an 8x12 foot space. To film with a couch, as shown above, you'll need a larger free area around 15x12 feet. Equipment-wise, you'll need a greenscreen, 1080p/60fps camera (preferably not a webcam), some lights, and a microphone (the instructions include a complete list).

After your studio is ready, you'll need to set up the game, install and configure the OBS (open broadcasting software), sync the real-world to the game camera and program the director controls. With the latter functions, you'll be able to switch between the player's POV, a free camera to view levels and contraptions, and the mixed-reality camera. A lot of work? Sure, but if you like tinkering with cameras and computers to do some very cool Hololens-style mixed-reality streaming (as shown above), you'll have a lot of fun, too.