Are you up for the challenge of helping create a video game? Global Game Jam is the world’s biggest game-creation event—“a hackathon focused on game development,” as its organizers say. Just like a group of musicians comes together for a jam session, Global Game Jam brings game-minded creators together with the goal of creating a game. The catch? Participants only have 48 hours to create the whole thing. Minnesota tech nonprofit Glitch is once again hosting an official GGJ...