Porting in the context of "TowerFall"

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.

Space Invaders is a fixed shooter video game released in 1978 by Taito. It was designed by Tomohiro Nishikado, who was inspired by other media such as Breakout, The War of the Worlds and Star Wars. It is one of the forerunners of modern video gaming and helped expand the video game industry from a novelty to a global industry. It was first released as an arcade game and later remade on different platforms; re-releases include ported and updated versions. Ported versions generally feature different graphics and additional gameplay options, including moving defense bunkers, zigzag shots, invisible aliens, and two-player modes. Space Invaders is one of the highest-grossing video game franchises of all time.

Taito released numerous sequels and spin-offs, many of which have also been remade on multiple platforms, including home consoles and handheld devices. Follow up titles are typically released in celebration of the original's anniversary. The first sequels were primarily released in arcades, while later titles were released on portable devices. Sequels often added power-ups and incorporated new gameplay mechanics—like three-dimensional playing fields, bosses, and rhythm-action—to the original's design. Most titles were released internationally, though some are exclusive to select regions. The games have received different receptions: the Atari 2600 port of the original became the video game industry's first "killer app", while some sequels were regarded as insignificant updates. Space Invaders and several of its arcade sequels are often included in video game compilations released by Taito.

Gentoo Linux (pronounced /ˈdʒɛntuː/ JEN-too) is a Linux distribution built using the Portage package management system. Unlike a binary software distribution, the source code is compiled locally according to the user's preferences and is often optimized for the specific type of computer. Precompiled binaries are available for some packages. Gentoo runs on a wide variety of processor architectures.

Gentoo package management is designed to be modular, portable, easy to maintain, and flexible. Gentoo describes itself as a meta-distribution because of its adaptability, in that the majority of its users have configurations and sets of installed programs which are unique to the system and the applications they use.

Tekken (鉄拳) is a 1994 fighting game developed and published by Namco. It was originally released on arcades, then ported to the PlayStation home console in 1995. One of the earliest 3D polygon-based games of the genre, Tekken was Namco's answer to Virtua Fighter and was designed by Seiichi Ishii, who himself was also Virtua Fighter's designer when he worked at Sega previously. The game was developed on the purpose-built low-cost System 11 board, based on PlayStation hardware.

Tekken was innovative in that it featured multiple game modes for a fighting game, which was not limited to the fighting game genre but also displayed Galaga on the loading screen. Plotwise, the game revolves around a tournament set up by Heihachi Mishima, who attempts to prove his power to his revenge-seeking son and protagonist, Kazuya. Tekken initially divided opinion regarding its presentation, character designs and unusual control system, which consisted of one button per limb. However, following its home console port originally released in March 1995 — only the third 3D console fighter following Virtua Fighter and Battle Arena Toshinden — it quickly rose in popularity and eventually became a PlayStation best seller based on copies sold, even quickly surpassing its two fighting game rivals. It started the Tekken series, with a sequel, Tekken 2, coming later in 1995.

Street Fighter is a 1987 fighting game developed and published by Capcom for arcades. It is the first competitive fighting game produced by the company and the first installment in the Street Fighter series. It was a commercial success in arcades and introduced special attacks and some of the conventions made standard in later fighting games, such as the six-button controls and the use of command-based special moves.

Street Fighter was directed by Takashi Nishiyama, who conceived it by adapting the boss battles of his earlier beat 'em up game Kung-Fu Master (1984), for a one-on-one fighting game, and by drawing influence from popular Japanese shōnen manga. A port for the TurboGrafx-CD was released as Fighting Street in 1988, and was re-released via emulation for the Wii's Virtual Console in 2009.