Knights of Valour

Knights of Valour is a side-scrolling beat 'em up video game series released by International Games System (IGS). The plot is loosely adapted from the 14th century Chinese historical novel Romance of the Three Kingdoms by Luo Guanzhong, and features the Five Tiger Generals, Zhuge Liang, Diaochan and others as playable characters. The gameplay involves the use of magical powers that are not featured in other games also based on the novel.

The series includes eleven games, including five main titles: Knights of Valour (1999), Knights of Valour 2 (2000), Knights of Valour: The Seven Spirits (2003), Knights of Valour 3 (2011), and the remade Knights of Valour (2015). The original games were developed for arcades and released in Traditional Chinese, Simplified Chinese, Japanese, Korean and English. All but two games in the series ran on the IGS' own PolyGame Master arcade hardware, the exceptions being KOV The Seven Spirits, which was released on Sammy Corporation's Atomiswave (later received a homebrew port for the Dreamcast in 2020), and the Knights of Valour 3D iteration, which was released online for PlayStation 4 and mobile.

A 3D installment of Knights of Valour for the PlayStation 4, as a free-to-play game, was originally slated for release in Spring 2015 in Asia and Japan, but was delayed to a summer release. The game is monetized by selling the ability to continue after being defeated and supports up to four players online. A beta version was released for trial for PlayStation Plus subscribers on the PS4. GamesInFlame acquired the rights to publish the game in Europe and Australia.

In April 2023, IGS released the IGS Classic Arcade Collection on the Nintendo Switch, a compilation of eight games originally created for the IGS PolyGame Master. Included in the collection are Knights of Valour Plus, Knights of Valour Superheroes and Knights of Valour 2 - Nine Dragons.