According to HowLongtoBeat, the average length for the main storyline in one of Mario's 3D platformers — such as "Super Mario 64," "Super Mario Galaxy," or "Super Mario 3D World" — comes out to about 13 hours. For 2017's "Super Mario Odyssey," however, a completionist run can quadruple the game's playtime, pushing the clock up to a whopping 62 hours.