Streets of Rage (ベア・ナックル 怒りの鉄拳, Bea Nakkuru: Ikari no Tekken?, "Bare Knuckle: Furious Iron Fist") is a side-scrolling beat 'em up released by Sega in 1991 for the Mega Drive. It is the first installment of the Bare Knuckle/Streets of Rage series which was followed by Streets of Rage 2 and Streets of Rage 3. The game was also converted over to Sega's Game Gear, Mega-CD and Master System. In 2007, the game was released for the Wii's Virtual Console in North America and Europe, and in 2009 it was released for the iOS via the App Store. The game was again made available as part of Sonic's Ultimate Genesis Collection in 2009 on both the PlayStation 3 and Xbox 360 consoles. There was also a comic strip series based upon the games which appeared in Sonic the Comic. These three stories are based on Streets of Rage 2 and do not feature Adam. The game features an acclaimed chiptune soundtrack by Yuzo Koshiro, who released it as an album in the Japanese music market.

Streets of Rage 2, later released in Japan as Bare Knuckle II: The Requiem of the Deadly Battle (ベア・ナックルII 死闘への鎮魂歌, Bea Nakkuru Tsū: Shitō he no Chinkonka?), and in Europe as Streets of Rage II with a Roman numeral, is a side-scrolling beat 'em up video game released by Sega in 1992 for the Mega Drive / Genesis console. The game is also playable in the game Sonic's Ultimate Genesis Collection. It is the second game in the Streets of Rage series, a sequel to Streets of Rage and followed by Streets of Rage 3. The game introduced two new characters: Max Thunder and Eddie "Skate" Hunter (known as Sammy Hunter in Japan), brother of Adam Hunter from the original game.

Syndicate Wars, or SW for short, is a groundbreaking hack developed by Red Crimson with help from gsaurus and Daors. It allows you to play with any character of the game, including bosses and thugs, PLUS Adam Hunter (Original Sprites by Daors). That's 23 playable characters! No enemy characters are modified, they play as they are in the original. All characters are selectable on the select screen.Syndicate Wars is designed to be fully moddable with the Pancake2 Editor (v1.6 and above, see further below).

Streets of Rage 3, known in Japan as Bare Knuckle III (ベア・ナックルIII?) and subtitled Tekken Seiten (鉄拳聖典, lit. Iron Fist Scriptures?) in pre-release media and the official soundtrack release, is a side-scrolling beat 'em up released by Sega in 1994 for the Sega Mega Drive/Genesis. It is the last part of the Streets of Rage series. It was later released for the Japanese version of Sonic Gems Collection for the Nintendo GameCube and PlayStation 2, and for the Wii Virtual Console on September 24, 2007. The game also appeared in Sonic's Ultimate Genesis Collection for Xbox 360 and PlayStation 3. The game had featured several enhancements over Streets of Rage and Streets of Rage 2 such as a more complex plot, multiple endings, longer levels, increased difficulty, more in-depth scenarios (with interactive levels and the return of traps like pits) and faster gameplay (with dash and dodge moves). Weapons could now only be used for a few times before breaking and could now be integrated with unique moves with certain characters, hidden characters were added and a few cutscenes were included to give the story greater depth.