Chrono Trigger (Japanese: クロノ・トリガー, Hepburn: Kurono Torigā) is a role-playing video game developed and published by Square (now Square Enix) for the Super Nintendo Entertainment System in 1995. Chrono Trigger's development team included three designers that Square dubbed the "Dream Team": Hironobu Sakaguchi, the creator of Square's Final Fantasy series; Yuji Horii, a freelance designer and creator of Enix's popular Dragon Quest series; and Akira Toriyama, a freelance manga artist famed for his work with Dragon Quest and Dragon Ball. Kazuhiko Aoki produced the game, Masato Kato wrote most of the plot, while composer Yasunori Mitsuda scored most of the game before falling ill and deferring the remaining tracks to Final Fantasy series composer Nobuo Uematsu. The game's story follows a group of adventurers who travel through time to prevent a global catastrophe. Square re-released a ported version by Tose in Japan for the PlayStation in 1999, later repackaged with a Final Fantasy IV port as Final Fantasy Chronicles in 2001 for the North American market. A slightly enhanced Chrono Trigger, again ported by Tose, was released for the Nintendo DS on November 25, 2008, in North America and Japan, and went on sale in Australia on February 3, 2009 and in Europe on February 6, 2009. The game was never released in PAL territories before the Nintendo DS version. Chrono Trigger was a critical and commercial success upon release and is frequently cited as one of the best video games of all time. Nintendo Power magazine described aspects of Chrono Trigger as revolutionary, including its multiple endings, plot-related sidequests focusing on character development, unique battle system, and detailed graphics. Chrono Trigger was the third best-selling game of 1995, and the game's SNES and PlayStation iterations have shipped 2.65 million copies as of March 2003. The version for the Nintendo DS sold 790,000 copies as of March 2009. Chrono Trigger was also ported to mobile phones, Virtual Console, the PlayStation Network, iOS devices, and Android devices.

Commander Keen is an episodic video game developed by id Software in the early 1990s. The series focuses on the adventures of Billy Blaze, an 8-year-old boy who travels through space and assumes the secret identity of "Commander Keen". The series was successful at replicating the side-scrolling action of the Nintendo Entertainment System Super Mario Bros. games in DOS. The cartoon-style platform games are notable for their pioneering use of EGA graphics and shareware distribution, and they were some of the first games by id Software (who went on to later develop Wolfenstein 3D, Doom and Quake). The games were also exciting to the PC gaming community of the time because of John D. Carmack's smooth-scrolling graphics game engine, which first allowed smooth side scrollers on PC by only redrawing the elements of the screen that actually changed frame to frame. Although developed by id, most of the Commander Keen games were published by Apogee Software, an already established DOS shareware game publisher. Tom Hall is Commander Keen's designer and the creator of its universe. Commander Keen Complete Pack, a collection of the official Commander Keen games (excluding Aliens Ate My Baby Sitter! and Keen Dreams) was made available on Steam on August 3, 2007] Keen Dreams was ported and released for Android enabled devices on June 10, 2013 on Google Play. On 23rd October in 2014, 3D Realms released 3D Realms Anthology, which included Commander Keen: Goodbye Galaxy and Commander Keen: Invasion of the Vorticons in the collection.

Commander Keen is an episodic video game developed by id Software in the early 1990s. The series focuses on the adventures of Billy Blaze, an 8-year-old boy who travels through space and assumes the secret identity of "Commander Keen". The series was successful at replicating the side-scrolling action of the Nintendo Entertainment System Super Mario Bros. games in DOS. The cartoon-style platform games are notable for their pioneering use of EGA graphics and sharewaredistribution, and they were some of the first games by id Software (who went on to later develop Wolfenstein 3D, Doom and Quake). The games were also exciting to thePC gaming community of the time because of John D. Carmack's smooth-scrolling graphics game engine, which first allowed smooth side-scrollers on PC by only redrawing the screen's elements that changed frame-to-frame. Most of the Commander Keen games were published by Apogee Software, an already established DOS shareware game publisher. Tom Hall is Commander Keen's designer and the creator of its universe. Commander Keen Complete Pack, a collection of the officialCommander Keen games (excluding Aliens Ate My Baby Sitter! and Keen Dreams) was made available on Steam on August 3, 2007. Keen Dreams was ported and released for Android enabled devices on June 10, 2013 on Google Play.