Mega Man 3, known as Rockman 3 Dr. Wily no Saigo!? (ロックマン3 Dr.ワイリーの最期!?, Rokkuman Surī Dokutā Wairī no Saigo!??, lit. "Rockman 3: The End of Dr. Wily!?") in Japan, is a video game developed and published by Capcom for the Nintendo Entertainment System. It is the third game of the original Mega Man series and was originally released in Japan on September 28, 1990. The game localized in North America later in 1990 and in European regions in 1992. Taking place after the events of Mega Man 2, the plot follows the titular hero as he helps his creator, Dr. Light, and a former villain, Dr. Wily, collect parts for a peace-keeping robot by defeating several Robot Masters that have gone haywire. A platform-action game, Mega Man 3 follows the same format set forth by its two predecessors. The player, as Mega Man, must complete a series of stages in any order. Defeating a stage's boss will earn the player its special weapon, which can be selected and used at will throughout the rest of the game. Mega Man 3 introduces new gameplay elements such as Mega Man's canine sidekick Rush and the ability to slide along the ground. Unlike with the first two installments of the series, artist and designer Keiji Inafune has considered the creation of Mega Man 3 to be very stressful due to time constraints and his own increased responsibilities during its development. Following the success of Mega Man 2 released two years earlier, Mega Man 3 has sold over one million copies and has been positively received in critical reviews. Its presentation and gameplay has been especially praised, although many sources found the game to be too difficult. Like other titles in the series, Mega Man 3 has been re-released several times on other gaming platforms, on mobile phones, and as part of various Mega Man franchise compilations.

Mega Man 4, known in Japan as Rockman 4 Aratanaru Yabō!! (ロックマン4 新たなる野望!!, Rokkuman Fō Aratanaru Yabō!!?, lit. "Rockman 4: A New Ambition!!"), is a platform game developed by Capcom for the Nintendo Entertainment System. It is the fourth game in the original Mega Man series and was originally released in Japan on December 6, 1991. The game was localized in North America the following January, and in Europe in August 1993. The game's story takes place after the third defeat and supposed death of Dr. Wily, and features the Earth coming under threat from a mysterious scientist named Dr. Cossack and his eight "Robot Masters". Fearing the worst, Dr. Light sends Mega Man to save the world once again. Mega Man 4 carries on the same action and platforming gameplay as the first three games, in which the player completes a series of stages in any order and adds the weapon of each stage's boss to Mega Man's arsenal. One notable added feature is the "New Mega Buster" (often shortened to "Mega Buster"), an upgraded arm cannon that lets the player charge a regular shot into a much more powerful blast. The development team was mindful that this innovation would change the overall feel of the game. Despite Mega Man 4 receiving positive critical reviews during its early 1990s release, the game is widely regarded today to represent a downward shift from the quality of the first three games in the series. The Mega Buster itself has been considered an overused mechanic by several sources. Mega Man 4 was re-released on the Japanese PlayStation, PlayStation Network, and mobile phones; the North American Mega Man Anniversary Collection; and worldwide on the Virtual Console for 3 Nintendo systems (Wii, Nintendo 3DS and Wii U).

Mega Man 6, known in Japan as Rockman 6 Shijō Saidai no Tatakai!! (ロックマン6 史上最大の戦い!!, Rokkuman Shikkusu Shijō Saidai no Tatakai!!?, lit. "Rockman 6: The Greatest Battle Ever!!"), is a video game developed by Capcom for the Nintendo Entertainment System (NES). It is the sixth installment in the original Mega Man series and was originally released in Japan on October 5, 1993 and in North America the following March. It was included in the Mega Man Anniversary Collection released in 2004. Its first PAL region release was June 11, 2013 for the 3DS Virtual Console, nearly twenty years after the game's first release. The story of Mega Man 6 opens during a competitive robot fighting tournament with entrants from all around the globe. A villainous figure known as "Mr. X" announces he has reprogrammed the eight powerful contestants with intent to use them for taking over the world. The game's robotic protagonist Mega Man, who was sent to oversee the tournament, springs into action to foil X's plot. A standard action-platformer, Mega Man 6 plays nearly identically to its five predecessors with a few added features such as stages with alternate pathways and new Rush adaptors. Mega Man 6 is the first game in the series to receive character design input from fans outside of Japan. This late-era game was also the last in the series released on Nintendo's 8-bit console. Due to the declining support of the NES and the growing presence of the newer and more powerful Super Nintendo Entertainment System (SNES), Capcom decided not to publish Mega Man 6 in North America. The North American version of Mega Man 6 was released by Nintendo of America instead. Critical reviews favored the game's comparable presentation and use of the established gameplay model from preceding chapters in the series, though nearly all judged it a redundant sequel. While the first five Mega Man games are available on the Wii's Virtual Console, this game is absent from the Wii Shop Channel; however the game was released via the 3DS Virtual Console in Japan and Europe, with North America on June 20, 2013.

Pac-Man (パックマン, Pakkuman?) is an arcade game developed by Namco and first released in Japan on May 22, 1980. It was licensed for distribution in the United States by Midway and released in October 1980. Immensely popular from its original release to the present day, Pac-Man is considered one of the classics of the medium, virtually synonymous with video games, and an icon of 1980s popular culture. Upon its release, the game—and, subsequently, Pac-Man derivatives—became a social phenomenon that sold a large amount of merchandise and also inspired, among other things, an animated television series and a top-ten hit single. When Pac-Man was released, the most popular arcade video games were space shooters, in particular Space Invaders and Asteroids. The most visible minority were sports games that were mostly derivatives of Pong. Pac-Man succeeded by creating a new genre and appealing to both genders. Pac-Man is often credited with being a landmark in video game history, and is among the most famous arcade games of all time. It is also one of the highest-grossing video games of all time, having generated more than $2.5 billion in quarters by the 1990s. The character has appeared in more than 30 officially licensed game spin-offs, as well as in numerous unauthorized clones and bootlegs. According to the Davie-Brown Index, Pac-Man has the highest brand awareness of any video game character among American consumers, recognized by 94 percent of them. Pac-Man is one of the longest running video game franchises from the golden age of video arcade games. It is part of the collection of the Smithsonian Institution in Washington, D.C. and of New York's Museum of Modern Art.

For the series of computer games by Alawar, see PacMania Pac-Mania (パックマニア, Pakku-Mania?) is an arcade video game in the Pac-Man series, released by Namco in 1987 and distributed by Atari Games in the United States and Europe. It runs on Namco System 1 hardware and was the last Pac-Man game to run on an arcade cabinet until 1996. It is a pseudo-3D interpretation of the classic maze game genre using an isometric view and features most elements of the original Pac-Man, as well as several new features.