NetHack is an open source single-player roguelike video game, first released in 1987 and maintained by the NetHack DevTeam. The game is a fork of the 1982 game Hack, itself inspired by the 1980 game Rogue. The player takes the role of one of several pre-defined character classes to descend through multiple dungeon floors, fighting monsters and collecting treasure, to recover the "Amulet of Yendor" at the lowest floor and then escape.
grep is a command-line utility for searching plaintext datasets for lines that match a regular expression. Its name comes from the ed command g/re/p, which has the same effect. grep was originally developed for the Unix operating system, but later available for all Unix-like systems and some others such as OS-9.
In computing, the utility diff is a data comparison tool that computes and displays the differences between the contents of files. Unlike edit distance notions used for other purposes, diff is line-oriented rather than character-oriented, but it is like Levenshtein distance in that it tries to determine the smallest set of deletions and insertions to create one file from the other. The utility displays the changes in one of several standard formats, such that both humans or computers can parse the changes, and use them for patching.
In computing, tar is a computer software utility for collecting many files into one archive file, often referred to as a tarball, for distribution or backup purposes. The name is derived from "tape archive", as it was originally developed to write data to sequential I/O devices with no file system of their own, such as devices that use magnetic tape. The archive data sets created by tar contain various file system parameters, such as name, timestamps, ownership, file-access permissions, and directory organization. POSIX abandoned tar in favor of pax, yet tar sees continued widespread use.
Rogue is a dungeon crawling video game by Michael Toy and Glenn Wichman with later contributions by Ken Arnold. Rogue was originally developed around 1980 for Unix-based minicomputer systems as a freely distributed executable. It was later included in the Berkeley Software Distribution 4.2 operating system (4.2BSD). Commercial ports of the game for a range of personal computers were made by Toy, Wichman, and Jon Lane under the company A.I. Design and financially supported by the Epyx software publishers. Additional ports to modern systems have been made since by other parties using the game's now-open source code.
Dragon Quest IV: Chapters of the Chosen, titled Dragon Warrior IV when initially localized to North America, is a role-playing video game, the fourth installment of the Dragon Quest video game series developed by Chunsoft and published by Enix, and the first of the Zenithian Trilogy. It was originally released for the Famicom on 11 February 1990 in Japan. A North American NES version followed in October 1992, and would be the last Dragon Quest game localized and published by Enix's Enix America Corporation subsidiary prior to its closure in November 1995, as well as the last Dragon Quest game to be localized into English prior to the localization of Dragon Warrior Monsters in December 1999. The game was remade by Heartbeat for the PlayStation, which eventually was available as an Ultimate Hits game. The remake was ported by ArtePiazza to the Nintendo DS, released in Japan November 2007 and worldwide in September 2008. A mobile version based on the Nintendo DS remake was released in 2014 for Android and iOS.
Descent II is a 1996 first-person shooter game developed by Parallax Software and first published for DOS by Interplay Productions. A version for the PlayStation was released under the title Descent Maximum. It is the second installment in the Descent video game series and the sequel to Descent. The player controls a spaceship from the pilot's perspective and must navigate extrasolar underground mines to locate and destroy their reactors and escape being caught in their self-destructions, while engaging and surviving infected robots, which will attempt to destroy the ship. Unlike other first-person shooters, its six-degrees-of-freedom scheme allows the player to move and rotate in any three-dimensional space and direction.
Chase is a turn-based computer game in which players are tasked with escaping from robots programmed to pursue and kill them. The player attempts to destroy the robots by moving in such a way that the robots collide with each other or other obstacles. The basic concept has been part of games stretching into the 1970s, and is among the earliest of the "standards" for microcomputer platforms. Many variations exist, the most notable being the home computer-based Escape! and Zombies, Daleks on Mac OS and robots on Unix.
Thottbot was a website originally launched in 2001 as a news aggregator for various online role-playing games. In August 2004, the site was re-written into a searchable database exclusively for the MMORPG World of Warcraft, as well as a plug-in that could be used in the game itself to gather additional data. The website was discontinued on November 30, 2010 when its parent company, ZAM Network, merged it with its similar database website Wowhead.
Mega Man 2: The Power Fighters is a fighting game in the Mega Man series released as an arcade video game in Japan in 1996. It is the direct sequel to Mega Man: The Power Battle released the previous year. Both games were ported to home consoles in North America in 2004 as part of the Mega Man Anniversary Collection for PlayStation 2, Xbox, and GameCube and in Japan during the same year as part of two game compilation titled Rockman: Power Battle Fighters, also for the PlayStation 2. An adaptation of both games for the Neo Geo Pocket Color, titled Rockman Battle & Fighters, was also made. Both games were later re-released as part of the Capcom Arcade 2nd Stadium compilation in 2022.
Neko is a cross-platform open-source animated cursor-chasing cat screenmate application.
Terminator is an open-source terminal emulator programmed in Java. It is available on Microsoft Windows, macOS, Linux and other Unix systems that use the X Window System. Terminator will run on any modern POSIX system running Java 6 or later. Terminator is licensed under the GPL-2.0-or-later license.
Mystery Dungeon: Shiren the Wanderer, originally released in Japan as Fushigi no Dungeon 2: Fūrai no Shiren, is a roguelike video game developed and published by Chunsoft. It is the second entry in the Mystery Dungeon series, following 1993's Torneko no Daibōken. It was originally released for the Super Famicom in 1995 in Japan. Sega published a Nintendo DS remake in 2006 in Japan and in 2008 internationally. The remake was later ported to iOS and Android and published by Spike Chunsoft in 2019.
Dungeon Crawl Stone Soup (DCSS) is a free and open source roguelike computer game and the community-developed successor to the 1997 roguelike game Linley's Dungeon Crawl, originally programmed by Linley Henzell. It has been identified as one of the "major roguelikes" by John Harris.
The Official Hamster Republic Role Playing Game Construction Engine is a free and open-source, "all-in-one" game creation system. It was designed to allow the quick creation of 2D role-playing video games (RPGs). It was originally written by James Paige in QuickBASIC and released in late 1997 or early 1998. In May 2005, the source code was released as free software under the GNU GPL-2.0-or-later, and it was soon ported from QuickBASIC to FreeBASIC and to modern operating systems.
In Unix and Unix-like operating systems, printf is a shell builtin that formats and outputs text like the same-named C function.
The first hobbyist-developed game for the Atari 2600 video game console was written in 1995, and more than 100 have been released since then. The majority of games are unlicensed clones of games for other platforms, and there are some also original games and ROM hacks. With only 128 bytes of RAM, no frame buffer, and the code and visuals closely intertwined, the 2600 is a difficult machine to program. and many games were written for the technical challenge. Emulators, programming tools, and documentation are available.
Cataclysm: Dark Days Ahead (CDDA) is an open-source survival horror roguelike video game. Cataclysm: Dark Days Ahead is a fork of the original game Cataclysm. The game is freely downloadable on the game's website and the source code is also freely available on the project's GitHub repository under the CC BY-SA Creative Commons license. The game is currently largely developed by its community. Rock, Paper, Shotgun named CDDA one of "The 50 Best Free Games on PC" in 2016.
Captain Commando is a 1991 futuristic side-scrolling beat 'em up originally developed and published by Capcom as an arcade video game, and later ported to several other platforms. It was the seventeenth game produced for the company's CP System hardware. The game stars the titular superhero who was originally conceived as a fictional spokesman used by Capcom USA in the company's console games during the late 1980s. The game was included in Capcom Beat 'Em Up Bundle compilation title, which was released digitally for Nintendo Switch, PlayStation 4, Xbox One, and Windows on September 18, 2018.
