Mortal Kombat and Night Trap: The Origin of Age Ratings in Games

The history of video games is marked by creative revolutions, technological advancements, and occasionally, intense social debates. Among all the moments that have shaped this medium, few have been as decisive as the early 1990s, when Mortal Kombat and Night Trap became the center of a national discussion in the United States and, consequently, forever transformed how games were understood, classified, and regulated around the world.

These two titles, each in their own way, provoked a political and media reaction that culminated in the creation of official age rating systems, giving rise to the ESRB in North America and helping to pave the way for PEGI in Europe years later. These events redefined the relationship between creators, consumers, governments, and the very culture of video games. To understand why Mortal Kombat and Night Trap had such a huge impact, it's necessary to revisit their market launch, the escalation of public concern, and the crucial moment when the US government decided to take video games to court.

The initial impact of Mortal Kombat and the rise of "violent games"

Released in 1992, the arcade game Mortal Kombat emerged as a more realistic and aggressive response to the colorful and fantastical fighting style that dominated arcades, especially with Street Fighter II. The big novelty was the use of digitized actors, which gave the characters an almost "real" appearance. This was unprecedented, and it immediately generated fascination among young players.

But there was another characteristic that quickly caught the attention of the public and the media: explicit violence. Brutal blows, blood spurting from the screen and, of course, the iconic Fatalities, which allowed the player to finish off their opponent with exaggerated executions, tearing off heads, dismembering bodies and burning them alive.

The game became an instant phenomenon, but also a target.

Newspapers began publishing alarmist articles, TV programs showed the Fatalities as "proof" of the moral degeneration promoted by video games, and parent groups expressed concern about children's exposure to that content. The controversy grew even more with the release of the home versions for Sega Genesis and SNES in 1993, as the violent game now left the arcades and entered homes.

While the Super Nintendo version removed the blood, the Mega Drive version retained almost all of the original violence, accessible via the iconic code ABACABB. It was this difference that provoked enough outrage to attract the attention of politicians.

Night Trap: the "cursed" game that became a moral symbol

At the same time, another game was on the rise: Night Trap, released in 1992 for the Sega CD. It was a FMV (Full Motion Video), using real actors in recorded scenes, simulating a kind of interactive movie. The player followed in real time a house invaded by vampiric creatures called "Augers", alternating between surveillance cameras and triggering traps to protect a group of young people.

Although it seems innocent when analyzed today, Night Trap was quickly labeled a “game that encouraged violence against women”. The most controversial scene, extensively shown out of context in hearings, involved a girl being captured by one of the monsters, but in practice, the game didn’t display graphic violence.

However, the mere fact that it was filmed with real actors and showed young people in tank tops and nightgowns was enough to turn the game into a target of public outrage. When combined with the moral panic generated by Mortal Kombat, Night Trap became a perfect symbol for politicians seeking to regulate video games.

The U.S. Senate gets involved

In 1993, Democratic Senator Joseph Lieberman, accompanied by Republican Senator Herb Kohl, launched a national campaign calling for federal regulation of video games. The main concern was that titles like Mortal Kombat and Night Trap were being consumed by children without any kind of parental supervision or warning.

The pressure gained enough momentum that, in December 1993, the U.S. Congress convened two live-streamed public hearings with representatives from the video game industry, child psychology experts, parent organizations, and politicians.

The hearings: video games in the defendant's bench

During the sessions, clips from Mortal Kombat and Night Trap were presented as evidence of the alleged harmful content to which children had access. Politicians repeatedly showed videos of Fatalities and scenes from Night Trap, often taken out of context, to provoke public shock.

The video game industry was disunited. At the time, it was divided into three major sectors: console manufacturers (Nintendo and Sega), the newly founded 3DO, and PC game producers. Without joint organization, each company tried to defend itself in isolation.

Nintendo, for example, accused Sega of allowing more violent games, since the Super Nintendo had censored Mortal Kombat. Sega defended its internal rating system for the Sega CD, but politicians argued that this system was insufficient and little known to the public.

The atmosphere was tense. The senators argued that if the industry didn’t create an effective form of self-regulation, the government would implement mandatory federal regulation. This pressured companies to unite quickly.

The Creation of ESRB

Fearing government intervention, the major companies, originally rivals, decided to unite to create the Entertainment Software Rating Board (ESRB), an independent body that would establish standardized and mandatory age ratings for games sold in the United States and Canada.

Officially launched in 1994, the ESRB was structured to function similarly to the MPAA system for films. It categorized games into age ratings and included content descriptors such as: violence, blood, strong language, adult themes, nudity, and suggestive humor.

The creation of the ESRB was a watershed moment. It allowed video games to self-regulate without government intervention and enabled more mature games to exist without the risk of total censorship. Thus, titles like Mortal Kombat II and, years later, Grand Theft Auto, were able to be released without federal restrictions.

Night Trap is temporarily removed from the market

Despite the creation of the ESRB, Night Trap continued to be heavily criticized. In response to the pressure, Sega removed the game from stores for a few months. Ironically, this only increased its cult status.

Years later, in interviews, Senator Lieberman acknowledged that Night Trap wasn’t as offensive as it seemed, proving that the debate was amplified by the moralistic atmosphere of the time.

The road to PEGI

While the United States was creating the ESRB, other countries were closely following the controversy. In the 1990s, many European countries already had individual rating systems for films, but there was no unified standard for video games. Thus, games were rated differently in each nation, creating confusion for consumers and distributors.

The increasing globalization of the gaming market, coupled with the direct influence of events in the United States, led the European Union to seek a solution. In 2003, the PEGI (Pan European Game Information) emerged, a unified rating system for all of Europe, partially inspired by the ESRB, but adapted to European cultural particularities.

The PEGI uses a combination of age ratings (3, 7, 12, 16, 18) and content descriptions: violence, discrimination, drugs, sex, fear, and gambling, ensuring clarity and consistency for parents and consumers. Like the ESRB, the European system allowed games with more adult themes, such as Resident Evil or God of War, to circulate legally as long as they were properly identified.

How these events changed the industry forever

The impact of these events was profound and lasting, affecting multiple aspects of game production and distribution, such as the end of ambiguity in game sales. Before the ESRB and PEGI ratings, parents lacked clear information about a game's content. Now, any product comes with detailed labels, helping families make more informed decisions.

Regulation didn’t censor games; on the contrary, the maturation of the industry opened doors for titles aimed at adult audiences without fear of banning. Works like Silent Hill 2, The Last of Us, The Witcher 3, and Doom (2016) only exist because the rating system protects creative freedom. It was also the trigger for the emergence of discussions about social responsibility: the industry began to debate issues such as the limits of violence, representation of minorities, and sexualization, seeking to balance artistic freedom and cultural sensitivity.

Mortal Kombat and Night Trap were never created to start a political debate, but they ended up becoming catalysts for essential change. The controversy of the 1990s, viewed with today's eyes, seems exaggerated. But their impact was real, and they went down in history as works that propelled the cultural growth of the industry.

The moral panic they generated revealed the absence of appropriate regulation and helped systems that we now consider natural, and the creation of the ESRB and, later, the PEGI guaranteed developers the freedom to create mature, complex, and artistically daring games. Without these systems, many of the greatest works in the history of video games might never have existed.