Mortal Kombat II is a 1993 fighting game developed and published by Midway for arcades, serving as the direct sequel to the original 1992 Mortal Kombat. Expanding the roster, refining the combat, and introducing a wider variety of gruesome finishing moves, it didn’t just become one of the most commercially successful arcade games of its era, it helped trigger a congressional hearing that reshaped how video games are rated and sold to this day. In this article, we’ll cover its story, gameplay evolution, cultural impact, and lasting legacy in fighting game history.
A Tournament Moves to a New Realm
Mortal Kombat II picks up directly after the events of the original game, following a rejuvenated sorcerer Shang Tsung and his master, the tyrannical emperor Shao Kahn. After convincing Shao Kahn that the invitation to a new Mortal Kombat tournament cannot simply be ignored, Tsung proposes holding the next tournament in Outworld itself, giving Kahn a significant home-field advantage. Raiden, the protector of Earthrealm, gathers a new group of warriors and leads them into Outworld, fully aware that a loss here could allow Outworld to overtake Earthrealm entirely.
This new setting opened the door for an entirely fresh cast of characters and storylines, while still keeping series mainstays like Liu Kang, Sub-Zero, and Scorpion central to the unfolding conflict.
Refining the Formula While Expanding the Cast
Mortal Kombat II made significant improvements over its predecessor across nearly every category. The character roster nearly doubled, growing from seven playable fighters in the original game to twelve in the sequel. New additions included Kitana, Shao Kahn’s personal assassin and step-daughter; Mileena, a Tarkatan clone of Kitana; Kung Lao, a Shaolin monk seeking vengeance for the destruction of his temple; Baraka, a savage Tarkatan warlord; and Jax Briggs, a Special Forces soldier searching for his missing comrade Sonya Blade.
Interestingly, Sonya and Kano, both playable in the original game, didn’t return as fighters in MKII, appearing only as background prisoners chained up in Shao Kahn’s arena. This decision came down to simple arcade hardware limitations: after Midway employees audited cabinets in the Chicago area and found that Sonya and Kano were consistently the least-chosen characters by players, the developers cut them down to background sprites to free up space for new fighters instead.
Gameplay Refinements Across the Board
Beyond the expanded roster, Mortal Kombat II introduced several mechanical improvements that gave combat a noticeably different feel from the original game:
- Crouching punch — A brand-new move added to every character’s basic moveset.
- Stronger roundhouse kick — Enhanced to knock opponents clear across the screen.
- More distinct hit boxes — The difference between high and low kicks became noticeably more pronounced.
- New ducking low punch — Replaced an uppercut input to deal minor damage from a crouched position.
- Removed Test Your Might minigame — Dropped entirely from this installment.
- Simplified progress tracking — The original scoring system was eliminated in favor of simply tracking consecutive match wins.
Visually, the game also took a major leap forward thanks to Midway’s improving technology, allowing for higher-resolution character sprites and more detailed stage backgrounds. This installment also marked the first appearance of Williams’ newly developed DCS sound system, a significant audio upgrade that would go on to be used in every subsequent Mortal Kombat arcade release going forward.
More Ways to Finish a Fight
If the original Mortal Kombat introduced the Fatality to the fighting game lexicon, Mortal Kombat II expanded that concept dramatically. Characters now had multiple Fatalities each to choose from, rather than just one, and the sequel introduced two entirely new types of finishing moves: the Babality, which transforms a defeated opponent into a diaper-clad infant, and the Friendship, a tongue-in-cheek alternative where the winning character performs a harmless, often comedic gesture instead of finishing off their opponent.
The game’s stages themselves got in on the brutality as well, introducing the franchise’s first stage-specific Fatalities. The Pit II, the Kombat Tomb, and the Dead Pool each offered unique environmental finishers, with the Dead Pool in particular letting players uppercut a defeated opponent into a bubbling acid bath, leaving nothing behind but a floating skeleton.
A Cast of Hidden Secrets
True to the series’ growing reputation for hidden content, Mortal Kombat II included three secret unlockable opponents: Jade, a green-clad female ninja immune to projectile attacks; Noob Saibot, a pitch-black silhouetted ninja described as a “lost warrior” from the original game; and Smoke, a gray-clad ninja who emits smoke from his body during fights. Noob Saibot’s name carries a clever bit of behind-the-scenes trivia, spelled backward, it reads “Boon” and “Tobias,” a nod to the game’s principal designers, Ed Boon and John Tobias.
A Commercial Phenomenon Unlike Almost Anything Before It
Mortal Kombat II wasn’t just successful, it became a full-blown cultural and financial juggernaut. The arcade version alone sold roughly 27,000 cabinet units and had grossed an estimated $600 million by 2002. WMS Industries, Midway’s parent company at the time, reported that quarterly sales rose from $86 million to $101 million following the game’s release, with much of that increase directly attributed to MKII’s arcade performance.
The game’s home console launch was just as explosive. On September 9, 1994, a date fans still affectionately refer to as “Mortal Friday,” more than 2.5 million copies were shipped across the Genesis, Game Gear, SNES, and Game Boy versions simultaneously, representing the best opening week sales in video game history up to that point. Mortal Kombat II went on to become America’s highest-grossing arcade game of 1994 according to the Amusement & Music Operators Association.
The Controversy That Reshaped the Industry
Mortal Kombat II’s massive popularity didn’t go unnoticed by lawmakers and advocacy groups already alarmed by the violence in the original game. By the end of 1993, the combined backlash against Mortal Kombat and the widely mocked Sega CD title Night Trap escalated into a formal congressional hearing, led by Senators Joe Lieberman and Herb Kohl. Lawmakers argued that the graphic content in games like Mortal Kombat II was harmful to children, with Lieberman infamously stating that such games taught children to “enjoy torture” before showing a clip of Sub-Zero ripping off an opponent’s head during a Fatality.
This wave of public and political pressure ultimately led directly to the creation of the Entertainment Software Rating Board, the ESRB, the rating system still used to classify video games in North America today. Decades later, the panic has largely faded into nostalgia, with even modern Mortal Kombat creative figures like Ed Boon acknowledging the validity of parental concerns from that era, even while the franchise itself has only grown larger and more violent in its subsequent entries.
A Lasting Legacy in Fighting Game History
Mortal Kombat II is frequently cited as one of the greatest video games ever made and is often considered the moment the franchise fully eclipsed its predecessor in both scale and cultural impact. It later appeared in numerous compilation releases, including Midway Arcade Treasures 2, Midway Arcade Treasures: Extended Play, and the Mortal Kombat Arcade Kollection, while also inspiring a non-canon retelling of its story in Mortal Kombat: Shaolin Monks.
Final Thoughts
Mortal Kombat II didn’t just refine its predecessor’s mechanics, it turned a niche arcade controversy into a defining moment for the entire video game industry. Between its expanded roster, deeper combat systems, and a level of violence intense enough to draw the attention of the United States Senate, it remains one of the most historically significant fighting games ever released, both for what it accomplished in arcades and for the lasting industry standards its controversy ultimately helped create.