Kamen Rider SD (仮面ライダーSD, Kamen Raidā Esu Dī, Masked Rider Super Deformed) is the collective title for a series of media released in the 1990s that are based on Toei's popular Kamen Rider Series. It features super deformed versions of the various Kamen Riders featured from Kamen Rider through Black RX placed in a cartoonish world, where each enemy of the Riders has banded together under the command of the "Great Leader" under the name "Gran Shocker".

Karaoke Studio (カラオケスタジオ, Karaoke Sutajio) is a music video game designed for Nintendo's Family Computer. Physically the game acts as a subsystem designed to be inserted into the Family Computer cartridge slot. Several levels of the game can be played on the subsystem alone, and additionally, smaller expansion cartridges (originally available for separate purchase) providing additional levels and other new content can be plugged directly into the Karaoke Studio subsystem. The game comes with a microphone peripheral capable of detecting a human voice.

Karate Champ, known in Japan as Karate Dō (空手道, "The Way of the Empty Hand"?) is a 1984 arcade game developed by Technōs Japan for Data East.

Karnov (カルノフ, Karunofu?) is a 1987 platform arcade game. It is the debut of Data East's mascot of the same name. After Data East became defunct due to bankruptcy in 2003, Paon, a company comprising former Data East staff, acquired the rights to Karnov, along with multiple other Data East games. In the game, players take control of the title character Jinborov Karnovski (ジンボロフ・カルノフスキー?), or "Karnov" for short. Karnov is a strongman popularly illustrated as being from an unspecified part of the Soviet Union's Central Asian republic as shown on the original arcade flyer and again in Karnov's Revenge. As Data East's mascot, the title character was reintroduced in many other Data East games, including Bad Dudes Vs. DragonNinja in which he played a boss in the first level. Karnov later appeared in the 1994 Neo-Geo game Karnov's Revenge. This game, also known as Fighter's History Dynamite, is not a sequel to the original Karnov, but to Fighter's History, a competitive one-on-one fighter in which Karnov was the final boss.