Downtown Nekketsu Kōshinkyoku: Soreyuke Daiundōkai is a game made by Technos Japan for the Famicom in 1990. It is the direct sequel to River City Ransom and is arguably the most popular game in the Kunio-kun series in Japan, as can be seen by its multiple sequels and remakes along with the battle royal mode. It was ported to the Game Boy as Downtown Nekketsu Kōshinkyoku: Dokodemo Daiundōkai in 1992.
The game allows up to 4 players to play simultaneously in four different events using four different teams. The objective of the game is to win events by scoring the most amount of points. As a sequel to River City Ransom, the game shares a similar control scheme and gameplay and players are encouraged to use violence during the non-fighting events to score points.
During a one player game, the player has to score higher than the opposing teams in each event in order to advance to the next event. Failing to do so will result in a Game Over regardless of the player's current ranking. The game has no save function or a passwords feature. The game does have an ending during single play, which requires the player to win the game as the Nekketsu team. If the game is being player by more than a single player, players can re-arrange the order of each event or choose to play specific events.
The Reihou Academy's Student Council has proposed to host an athletic meet in order to apologize for the incident caused by Yamada, the previous Student Council President. Mamoru Tōdō, the newly elected president of the student body has no intention of apologizing however. He hosts the athletic meet with very few rules so that the academy, with a team led by the Double Dragon brothers, can crush the other schools and prove their superiority.
At first, it appears that the other schools won't accept the challenge, but Nekketsu High School with a team led by Kunio and Hanazono High School led by Riki agreed to participate. Gōda from Houryu High School also assembled a team of players from other schools. And thus the teams calmly assembled to participate in Tōdō's athletic meet.