In the late 20th Century, mass media could be classified into eight mass media industries: books, newspapers, magazines, recordings, radio, movies, television and the internet. With the explosion of digital communication technology in the late 20th and early 21st centuries, the question of what forms of media should be classified as "mass media" has become more prominent. For example, it is controversial whether to include cell phones, video games and computer games (such as MMORPGs) in the definition. In the 2000s, a classification called the "seven mass media" became popular. In order of introduction, they are:
- Print (books, pamphlets, newspapers, magazines, etc.) from the late 15th century 宗教改革(ルターは当時の書籍発行部数600万部の内、約半数の300万部を占めた）
- Recordings (gramophone records, magnetic tapes, cassettes, cartridges, CDs, DVDs) from the late 19th century
- Cinema from about 1900
- Radio from about 1910
- Television from about 1950 東欧革命
- Internet from about 1990 アラブの春
- Mobile phones from about 2000
Each mass media has its own content types, its own creative artists and technicians, and its own business models. For example, the Internet includes web sites, blogs, podcasts, and various other technologies built on top of the general distribution network. The sixth and seventh media, internet and mobile, are often called collectively as digital media; and the fourth and fifth, radio and TV, as broadcast media. Some argue that video games have developed into a distinct mass form of media.[citation needed]
While a telephone is a two way communication device, mass media refers to medium which can communicate a message to a large group, often simultaneously. However, modern cell phones are no longer a single use device. Most cell phones are equipped with internet access and capable of connecting to the web which itself a mass medium. A question arises of whether this makes cell phones a mass medium or simply a device used to access a mass medium (the internet). There is currently a system where marketers and advertisers are able to tap into satellites, and broadcast commercials and advertisements directly to cell phones, unsolicited by the phone's user. This transmission of mass advertising to millions of people is a form of mass communication.
Video games may also be evolving into a mass medium. Video games convey the same messages and ideologies to all their users users. Users sometimes share the experience with each other by playing online. Excluding the internet however, it is questionable whether players of video games are sharing a common experience when they play the game separately. It is possible to discuss in great detail the events of a video game with a friend you have never played with because the experience was identical to you both. The question is if this is then a form of mass communication.
MMORPGS such as Runescape provide a common gaming experience to millions of users throughout the globe. It is arguable that the users are receiving the same message, i.e., the game is mass communicating the same messages to the various players.