International Karate is a karate fighting game created and published by System 3 for various home computers. Of these versions the 1986 releases for Commodore 64 and Atari 8-bit computers, created by Archer MacLean with music by Rob Hubbard, stand out for their good playability and overall high production values. Although conceptually identical, the ZX Spectrum version, created by a different team and released some months earlier in November 1985, is inferior. Epyx licensed and published the game in the US as World Karate Championship in April 1986. Except for a new loading screen and necessary tuning for the American NTSC television system, the US releases were unchanged. International Karate + a successor which expanded the gameplay through the introduction of an additional - although not player controllable - karateka, was released in 1987. Through the unauthorized release of International Karate + Gold in 2001, this player was made controllable using a joystick adapter.

International Superstar Soccer is the name of a series of football video games developed by Japanese company Konami, mostly by their Osaka branch, Konami Computer Entertainment Osaka (KCEO). It should not be confused with Konami Computer Entertainment Tokyo's Pro Evolution Soccer series (also known as Winning Eleven), which was originally developed for the PlayStation. Titles in the ISS series appeared on Super Nintendo, Mega Drive, Nintendo 64, PlayStation, PlayStation 2, Xbox, Nintendo GameCube and PC formats. The series is known as Jikkyō World Soccer in Japan.

International Superstar Soccer is the name of a series of football video games developed by Japanese company Konami, mostly by their Osaka branch, Konami Computer Entertainment Osaka (KCEO). It should not be confused with Konami Computer Entertainment Tokyo's Pro Evolution Soccer series (also known as Winning Eleven), which was originally developed for the PlayStation. Titles in the ISS series appeared on Super Nintendo, Mega Drive, Nintendo 64, PlayStation, PlayStation 2, Xbox, Nintendo GameCube and PC formats. The series is known as Jikkyō World Soccer in Japan.

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Iridion 3D is a quasi-3D rail shooter video game developed by Shin'en. A launch title for the Game Boy Advance portable game console, it was released in North America on May 29, 2001 and in Europe on September 21 the same year. Influenced by the Commodore 64 game Uridium, the game features a single starship fighting the alien Iridion, who have attacked Earth. Iridion spans seven levels from Earth to the aliens' home planet, each with a fixed linear path that ends with a boss. Iridion began development as a shooter for the Game Boy Color; when Shin'en decided to drop development and shift their focus to the Game Boy Advance, Iridion was the first game by the developer to appear on the system. Though billed as a 3D game, Shin'en used realtime encoding and resizing to manipulate the size of 2D sprites instead of creating a true 3D environment. More room on the game cartridge was available for graphics due to the game's use of the GAX Sound Engine, which allowed real-time decoding of song data in a small file size. On release Iridion garnered generally poor reviews. The graphics and sound were generally praised; even a year after its release, critics at TechTV considered it the best-looking game on the platform. In contrast, critics derided the game's repetitive and frustrating gameplay. Despite lukewarm reception to the title upon release, Iridion 3D influenced future Shin'en shooters such as Iridion II and Nanostray.

Iridion II is a scrolling shooter video game developed by Shin'en and published by Majesco Games and Sierra Entertainment in North America and PAL regions respectively for the Game Boy Advance handheld video game console. It is the sequel to Iridion 3D.