Ikari III: The Rescue is the final chapter in SNK's Ikari Warriors series, and the first game to be a brawler. Its unusual combat features an overhead perspective, punch/kick/jump buttons, and a rotating joystick like in the original Ikari games. It's notable for its military setting, gun-based boss fights, unique input device, and brutal Ikari difficulty.

Ikari III: The Rescue is a military-themed two-player overhead brawler from SNK. Unlike its predecessors, it's not an overhead shooter, although there are shooting segments in the form of boss fights. In true Ikari fashion, it's intensely difficult, although nowhere near as hard as the original Ikari Warriors.

Based on the Ikki Tousen manga and anime series.

Based on the Ikki Tousen manga and anime series, it was the first game in the franchise.

Based on the Ikki Tousen anime and manga series, its story is inspired by the classic Chinese novel Romance of the Three Kingdoms.

Infected Shelter is an ultra-violent rogue-lite beat'em up set in a post-apocalyptic world, the game has players fighting through procedurally generated shelters full of mutated creatures.

Iron Commando: Koutetsu no Senshi is a Japanese-exclusive two player brawler from Arcade Zone, the guys behind Legend. It's notable for its hectic gun-heavy gameplay, plentiful weapons, vehicle stages, and impressive graphics that feature an array of effects from fog to parallax scrolling. It's also one of the only brawlers with a dedicated grab button, which is also used to pick up weapons.

Jackie Chan Adventures: Legend of the Darkhand is a GBA-exclusive brawler based on the kids' animated cartoon show starring Jackie Chan. Its two-button combat engine emphasizes scoring. It features multiple difficulty settings and an optional Training mode.

You get what you expect to see - tons of breakable stuff to throw bad guys into. Although the game can be considered as platformer partially its combat is very diverse and satisfying especially regarding weapons. Some platforming stunts feel quite challenging as it should be. I wish common enemies could be more varied and numerous.

Jal-man Hamyeon Ggeudeul-eul Mageul Su Itta is a beat'em up based on sitcom 웬만해선 그들을 막을 수 없다 (You Can't Stop Them).

Based on the television series created by James Cameron. Players control Max, a genetically enhanced super-soldier on the run, as she battles her way through the cyberpunk streets of a post-apocalyptic Seattle.

Janggun-ui Adeul is an unlicensed beat'em up released for the Sega Master System by South Korean company Daou Infosys in 1995. The game is based on the South Korean film of the same name, translated as The General's Son or Son of the General, and follows a young man's rise through the world of Seoul gangsters.

Jay and Silent Bob Chronic Blunt Punch is a hand-drawn beat'em up developed by Interabang Entertainment. It stars Jay and Silent Bob on a mission to retrieve a stolen stash.

Players control Jay and Silent Bob as they brawl through the stores and corridors of a shopping mall. The game was also released as a physical NES cartridge.

The game features the likeness, voice acting, and motion capture of martial arts star Jet Li, who plays Kit Yun, a bodyguard protecting the head of a Hong Kong crime syndicate. Combat is directed with the right analog stick, letting players throw punches and kicks in any direction while moving. What a terrible decision.

Jim Lee's WildC.A.T.S.: Covert Action Teams is a single player superhero-themed brawler based on the Image Comic of the same name. It has three playable characters with unique stages that can be played in any order. Its combat has character-specific attacks such as charged projectiles. It also has truly gigantic sprites as well as music composed by Tommy Tallarico of Earthworm Jim fame.

Jitsu Squad is a fast-paced beat'em up developed by Dutch studio Tanuki Creative Studio. It features over-the-top combat with air combos, special moves, and screen-clearing attacks.

The game description says that there is a vehicle section and another ending probably.

Josh Journey Darkness Totems is a hand-drawn beat'em up developed by Brazilian studio Provincia Studio and published by QuByte Interactive. Players control four heroes to defeat Nightmare Monsters.

Judge Dredd is a three-player post-apocalyptic arcade brawler from Midway. Like their infamous Mortal Kombat series, this game features digitized actors in costumes for the sprites. It also has a ton of dialogue in the form of enemy taunts and one-liners from Dredd. Its combat is notable for having a crouch button as well as allowing you to attack in eight different directions. It also has both third person shooter as well as action platforming stages.

Judgement Force is a prototype version of Fighting Force. It was supposed to be released on November 26, 1996, on Sega Saturn, but became unreleased and it was redesigned into Fighting Force.

Judgment is a 3D action-adventure beat'em up developed by Ryu Ga Gotoku Studio and published by Sega for the PlayStation 4 in 2018. A spin-off of the Yakuza series, it follows lawyer-turned-private-detective Takayuki Yagami as he investigates a serial killer case in the Kamurocho district of Tokyo. The game blends detective work and exploration with brawler combat that lets players switch between Crane and Tiger fighting styles.

The game feature four characters from The King of Fighters series as playable characters - Kyo, Iori, Chizuru, Chin, and featuring Street Fighter II The World Warrior characters as enemies.

Just Beat Em Up World of Fury is a beat'em up released on PC by French developer Zudenan Digital.

Justice League Heroes: The Flash is a superhero-themed GBA-exclusive brawler from WayForward games. Its atypical combat engine features a super-fast dash move that homes in on enemies as well as an energy-based super mode. You can also summon Superman and Wonder Woman to take out all enemies on screen.