Porting in the context of "List of Space Invaders video games"

Creative Commons (abbreviated "CC"), since 2011, has created many "ports", or adaptions, of its licenses to make them compatible with the copyright legislation of various countries worldwide.

However, more recently, CC has been recommending against the use of ported licenses:

A video game clone is either a video game or a video game console very similar to, or heavily inspired by, a previous popular game or console. Clones are typically made to take financial advantage of the popularity of the cloned game or system, but clones may also result from earnest attempts to create homages or expand on game mechanics from the original game. An additional motivation unique to the medium of games as software with limited compatibility, is the desire to port a simulacrum of a game to platforms that the original is unavailable for or unsatisfactorily implemented on.

The legality of video game clones is governed by copyright and patent law. In the 1970s, Magnavox controlled several patents to the hardware for Pong, and pursued action against unlicensed Pong clones that led to court rulings in their favor, as well as legal settlements for compensation. As game production shifted to software on discs and cartridges, Atari sued Philips under copyright law, allowing them to shut down several clones of Pac-Man. By the end of the 1980s, courts had ruled in favor of a few alleged clones, and the high costs of a lawsuit meant that most disputes with alleged clones were ignored or settled through to the mid-2000s. In 2012, courts ruled against alleged clones in both Tetris Holding, LLC v. Xio Interactive, Inc. and Spry Fox, LLC v. Lolapps, Inc., due to explicit similarities between the games' expressive elements.

The Sega Saturn is a home video game console developed by Sega and released on November 22, 1994, in Japan, May 11, 1995, in North America, and July 8, 1995, in Europe. Part of the fifth generation of video game consoles, it is the successor to the successful Genesis. The Saturn has a dual-CPU architecture and eight processors. Its games are in CD-ROM format, including several ports of arcade games and original games.

Development of the Saturn began in 1992, the same year Sega's groundbreaking 3D Model 1 arcade hardware debuted. The Saturn was designed around a new CPU from the Japanese electronics company Hitachi. Another video display processor was added in early 1994 to better compete with the 3D graphics of Sony's forthcoming PlayStation.

Atari Corporation was an American manufacturer of home computers and video game consoles. It was founded by Jack Tramiel on May 17, 1984, as Tramel Technology, Ltd., but then took on the Atari name less than two months later when Warner Communications sold the home gaming and computing assets of Atari, Inc. to Tramiel.

Its chief products were the Atari ST, Atari XE, Atari 7800, Atari Lynx and Atari Jaguar; in addition to hardware, the company also published video games for its home systems and also had an in-house development team for Lynx and Jaguar software for porting, or developing original titles such as Warbirds and Trevor McFur in the Crescent Galaxy. In 1996, the company reverse merged with JTS Corp., becoming a small de facto non-operating division which itself closed after JTS sold all Atari assets to Hasbro Interactive in 1998.