21 Multiplayer null modem games

Alien Breed 3D is a first-person shooter, the fourth game in Team17's Alien Breed franchise, a series of science fiction-themed shooters. It was published in 1995 by Ocean Software.

Anno 1602: Creation of a New World, entitled 1602 A.D. in North America, is a 1998 construction and management video game developed by Max Design and published by Sunflowers Interactive. Set in the early modern period, it requires the player to build colonies on small islands and manage resources, exploration, diplomacy and trade. The game design is noteworthy for its attempt to implement a 'progressive' artificial intelligence, meaning that the pace of the game changes in response to how quickly players act.

Archon Ultra is an action-strategy video game developed by Free Fall Associates and published by Strategic Simulations in 1994 for MS-DOS. It is a remake of the 1983 game Archon: The Light and the Dark.

Battle Chess is a computer game version of chess with animated three-dimensional graphics. It was originally developed and released by Interplay Entertainment for the Amiga in 1988 and subsequently on many other systems, including 3DO Interactive Multiplayer, Acorn Archimedes, Amiga CD32, Amiga CDTV, Apple IIGS, Apple IIe, Atari ST, Commodore 64, MS-DOS, FM Towns, NES, MacOS, NEC PC-9801, X68000 and Microsoft Windows. In 1991, Battle Chess Enhanced was released by Interplay for the PC, featuring improved VGA graphics and a symphonic musical score that played from the CD-ROM.

Doom is a 1993 first-person shooter (FPS) game developed by id Software for MS-DOS. Players assume the role of a space marine, popularly known as Doomguy, fighting his way through hordes of invading demons from Hell. The first episode, comprising nine levels, was distributed freely as shareware and played by an estimated 15–20 million people within two years; the full game, with two further episodes, was sold via mail order. An updated version with an additional episode and more difficult levels, The Ultimate Doom, was released in 1995 and sold at retail.

Doom II, also known as Doom II: Hell on Earth, is a first-person shooter game by id Software. It was released for MS-DOS computers in 1994 and Macintosh computers in 1995. Unlike the original Doom, which was initially only available through shareware and mail order, Doom II was sold in stores.

Duke Nukem 3D is a first-person shooter video game developed by 3D Realms. It is a sequel to the platform games Duke Nukem and Duke Nukem II, published by 3D Realms.

Dungeon Keeper 2 is a strategy game developed by Bullfrog Productions and published by Electronic Arts in 1999 for Microsoft Windows. The sequel to Dungeon Keeper, the player takes the role of a 'dungeon keeper', building and defending an underground dungeon from the would-be heroes that invade it, as well as from other keepers. In the campaign mode, the player is charged with recovering the portal gems from each area in order to open a portal to the surface. The player can also construct a dungeon without strict objectives, and multiplayer is supported over a network.

G-Nome is a mech simulation video game developed by 7th Level. Publisher difficulties led to it having a protracted development cycle. Originally intended to be published by Merit as a DOS-based title, it was ultimately released on February 28, 1997, as 7th Level's first 3D game. Reviews upon release were unenthusiastic, as critics found that while the main selling point was innovative, the overall execution of the game was weak. G-Nome was followed up by a real-time strategy spin-off called Dominion: Storm Over Gift 3, developed by 7th Level, but acquired and released by Ion Storm.

Gloom is a 1995 computer game for the Amiga computer. Gloom was the first commercially released Amiga clone of first-person shooter Doom.

Master of Orion II: Battle at Antares is a 4X turn-based strategy game set in space, designed by Steve Barcia and Ken Burd, and developed by Simtex, who developed its predecessor Master of Orion and Master of Magic. The PC version was published by MicroProse in 1996, and the Apple Macintosh version a year later by MacSoft, in partnership with MicroProse. The game has retained a large fan base, and is still played online.

MIDI Maze is a networked first-person shooter maze game for the Atari ST developed by Xanth Software F/X and released in 1987 by Hybrid Arts. The game takes place in a maze of untextured walls. The world animates smoothly as the player turns, much like the earlier Wayout, instead of only permitting 90 degree changes of direction. Using the MIDI ports on the Atari ST, the game is said to have introduced deathmatch combat to gaming in 1987. The game found a wider audience when it was converted to Faceball 2000 on the Game Boy.

NAM, sold under the name Napalm in Walmart retail outlets, is a commercial Build engine first-person shooter video game set during the Vietnam War, developed by TNT Team and published by GT Interactive Software.

Null modem is a communication method to directly connect two DTEs using an RS-232 serial cable. The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters directly to one another without the modems. It is also used to serially connect a computer to a printer, since both are DTE, and is known as a Printer Cable.

Populous II: Trials of the Olympian Gods is a 1991 strategy video game in the Populous series for the Amiga, Atari ST and MS-DOS-based computers, developed by Bullfrog Productions. Populous II is a direct sequel to Bullfrog's earlier game Populous and is one of the company's most notable games.

Powermonger is a real-time strategy game developed by Bullfrog in 1990 for Amiga and Atari ST, derived from the Populous engine but presented using a 3-dimensional game map.

Red Baron is a combat flight simulation video game for MS-DOS created by Damon Slye at Dynamix. It was published by Sierra On-Line in 1990.

StarCraft is a 1998 military science fiction real-time strategy game developed and published by Blizzard Entertainment for Microsoft Windows. The game spawned the StarCraft franchise, and became the first game of the video game series. A Classic Mac OS version was released in 1999, and a Nintendo 64 adaptation, co-developed with Mass Media, was released in 2000.

StarCraft: Brood War is the expansion pack for the military science fiction real-time strategy video game StarCraft. Released in December 1998 for Microsoft Windows and June 1999 for Mac OS, it was co-developed by Saffire and Blizzard Entertainment. The expansion pack introduces new campaigns, map tilesets, music, extra units for each race, and upgrade advancements. The campaigns continue the story from where the original StarCraft ended, with the sequel, StarCraft II: Wings of Liberty, continuing from the conclusion of Brood War. The expansion was released first in the United States on December 18, 1998.

Stunt Car Racer is a racing video game developed by Geoff Crammond. It was published in 1989 by MicroProse, under their MicroStyle and MicroPlay labels in the United Kingdom and in the United States, respectively.

World War II GI, also known as simply WWII GI, is a first-person shooter video game set during the events of World War II. Developed by TNT Team and published by GT Interactive, the game was released in 1999 as the direct sequel to NAM, which was released the year prior. World War II GI was the last commercially released game to use the Build engine until the release of Ion Fury in 2019. The player takes control of 101st Airborne Division G.I. Corporal Gerardi, sent in to wipe out scores of Wehrmacht and Schutzstaffel soldiers. World War II GI was later re-released on Steam on November 13, 2015, with Retroism and Night Dive Studios as the publishers.