Nihon Falcom Corp.

Nihon Falcom (日本ファルコム) is a Japanese game developer based in Tachikawa, Tokyo. The company was founded in March 1981 by Masayuki Katō, who remained its chairman during subsequent years. Falcom initially focused on producing games for Japanese home computers (later PC Windows), though many of their most popular titles were ported to various console systems as well. In 2001 Falcom was incorporated. Falcom was one of the pioneers of the action RPG genre, to which most of their best-known games belong. With their Dragon Slayer, Xanadu, and Ys series of action RPGs the company has established itself as one of the most influential developers in the genre. One of the key features in many of their games (particularly early titles) was "bumping" combat, which made action-based battles possible without the use of a separate "action" key or button. They were also the fist company to apply vocals to game music, the first to have their own band consisting of professional musicians (the Falcom Sound Team JDK), and the first to produce separately available game music CDs.

Nine Dragons Software

Noch Software Inc.

NoriaWorks Entertainment

Northwest Software

NoSense

Novell

Nowhere Software

Ocean Software Ltd.

Known as Bandai Namco Entertainment UK Ltd.

Odysseus Software

Oleg Demin

Omegavision

Open Production

Open Production (열림 기획) was a South Korean software developer. It was founded on May 20th, 1992 by Kim Eulsuk, and employed the programmers Koo Eunjoong and Lee Sanghun as well as several former employees of Zemina. Open soon became a second-party developer for Daou, which resulted in a prolific period of game production for 8-bit consoles. Open started developing PC games in late 1994. On March 18th, 1996, a sister company called Open Tech was established. Open Tech eventually began focusing on PC hardware and network technology, while the original company concentrated on vending machines for batteries, karaoke machines, and remote-controlled fragrance dispensers before becoming defunct around 1998. Four of the games developed by Open saw an Australian release in 1995, when HES published 4 Pak All Action.

Opera Soft S.A.

Spanish company founded in 1986, and which closed in 1992. It was part of what was known as The Golden Era Of Spanish Software, along with other companies like Zigurat, Topo Soft and Dinamic. While its first work was the Commodore 64 version of Camelot Warriors, its first original game was Livingstone, I Presume?, which brought the company wider success.

Optimum Resource, Inc.

Ordilogic Systems

Orion Software, Inc.

OSP Enr.

Oracle Software Enr. (from 1990 to 1994)

Overflow Productions

Oxford Digital Enterprises Ltd.

Oxford Digital Enterprises Ltd., also known as ODE, was a software development studio founded in 1983 by David Pringle when he met Gareth Blower while working on mainframe computers. Their first program was called Macbeth and based on the play by William Shakespeare. Their first popular game was Titanic: The Recovery Mission, released in April 1986 by Electric Dreams Software and they also did Trivial Pursuit for Domark in the same year. In 1993 Oxford Digital was acquired by Empire Interactive Europe Ltd. and became Empire Oxford, an internal Empire studio. The new team included all of ODE's employees.

Ozark Softscape

Headed by Dan Bunten, also consisting of Bill Bunten, Jim Rushing, and Alan Watson. Developed M.U.L.E., Seven Cities of Gold, and Heart of Africa.

P.A.S. Systems

"Plain and Simple Systems," which developed the 1992 game Maelstrom that was then published by Merit Software. Mark Vange was their director.

Pack Media Company, Inc.

Painting by Numbers, Ltd.

Impact Software Development, Ltd. (from May 18, 1988 to Mar 15, 1990)

Panda Entertainment Technology Co., Ltd.

Panda Entertainment (熊貓軟體) was a Taiwanese game developer active during the 1990s. They are best known for their fighting games such as the Sango Fighter series. In 2012, the company's entire back catalog was acquired by Super Fighter Team, which began to develop new products based on the material.

Pangea Software, Inc.

Pangea Software is an Macintosh game company that is owned and operated by Brian Greenstone. Formed in 1987, the company began by writing a number of shareware games for the Apple IIGS computer, with their first commercial game, Xenocide, being released in 1989. Their first published Macintosh game came in 1993.