Complex sentence: User interaction via chat rooms forms a major component of live streaming; an extreme example of viewer interfacing is the social experiment Twitch Plays "Pokémon", in which viewers attempt to complete "Pokémon" games by typing commands in chat that correspond to controller inputs.
Split into simpler sentences: User interaction via chat rooms forms a major component of live streaming. An extreme example of viewer interfacing is the social experiment Twitch Plays "Pokémon", where viewers collaborate to complete "Pokémon" games by typing in commands that correspond to controller inputs.