Short answers, pulled from the story.
PaRappa the Rapper, released in 1996, is credited as the first true rhythm game. Its mechanic of pressing buttons in a sequence shown on screen formed the core template for the genre. Its success sparked the broader popularity of music-based video games.
Guitar Hero and Rock Band each earned more than $1 billion. Artists whose music appeared on the soundtracks received royalties, and the exposure drove additional sales of their recordings. A study by Youth Music found that 2.5 million out of 12 million children in the United Kingdom began learning real instruments after playing these games.
Sales of rhythm games fell from $1.47 billion in 2008 to $700 million in 2009, driven by market saturation, the late-2000s recession, and genre stagnation as franchises retained the same basic gameplay across many iterations. Wedbush Securities analyst Michael Pachter estimated this saturation accounted for one-third of the video game industry's 12% sales decline that year.
West Virginia introduced Dance Dance Revolution into school physical education classes due to the state's high obesity rates, and more than several hundred schools in at least 10 states used the game in curricula. Researchers at Johns Hopkins University used Guitar Hero III to help amputee patients and develop prosthetic limbs. Dance games have also been used in rehabilitation and fall-prevention programs for elderly patients.
Beat Saber, released in 2018, is a virtual reality rhythm game in which players cut colored cubes in time with a song's beat. At the time of its release it was the top-selling and highest-rated virtual reality game on the Steam platform, marking the rhythm genre's significant entry into VR gaming.
Fortnite Festival is a Rock Band-style game mode developed by Harmonix after its 2021 acquisition by Epic Games, released within the Fortnite platform in 2023. It supports traditional note-matching for one to four players and includes Jam tracks for mixing songs. It added support for existing Guitar Hero and Rock Band controllers after launch.