GTLive is a popular live streaming channel created by MatPat, the founder of The Game Theorists. It features gameplay, discussions, and interactive content where MatPat and his wife, Stephanie Patrick, engage with their audience in real-time. The channel covers a variety of video games, offering insights, theories, and entertainment. Viewers can participate in the live chat, making it a community-driven experience. GTLive is known for its fun atmosphere and the unique blend of gaming and analysis that MatPat is famous for.