Abandonware DOS title

Science fiction games sorted by title, from Z to A

Time travel, space wars, alien empires, alternate universe, cyberpunk anti-heroes, space invaders, post-apocalyptic worlds, dystopian societies, mad scientists, galaxies far far away, strange new worlds, mech battles, deep space exploration, evil robots... should I go on?
DarkSide-incentive-03

Dark Side

DOS19883.3/5 Major Developments
dark-reign-1-05

Dark Reign: The Future of War

Windows XP/98/951997protected4.1/5 Auran Games
dark-reign-2-06

Dark Reign 2

Windows XP/98/952000protected3.9/5 Pandemic Studios
dark-horizon-06

Dark Horizons Lore: Invasion

Windows XP/98/95DOSLinux2004freeware4.2/5
darius-gaiden-05

Darius Gaiden

Windows XP/98/9519984.3/5 Taito
dalek-attack-01

Dalek Attack

DOS19923.9/5 Alternative Software
dgeneration-3

D/Generation

DOS19914/5 The Software Toolworks
d-zone-01

D-Zone

DOS19923.9/5
cyclones-05

CyClones

DOS1994protected3.9/5 Raven Software
cyberrace-02

CyberRace

DOS19933.6/5 Cyberdreams
cybercon3-01

Cybercon III

DOS19924/5 The Assembly Line
crystalcaves2-1

Crystal Caves

DOS1991protected3.9/5 Apogee Software
crusaderremorse-1

Crusader: No Remorse

DOS1995protected3.9/5 Origin Systems
Crusader is an action-oriented computer game. The player controls a super soldier that defects from the current world government and joins the Resistance. The world is shown in an isometric view.
crusadernoregret-4

Crusader: No Regret

DOS1996protected4/5 Origin Systems
crossfire-2

Crossfire

DOS19823.7/5 Sierra On-Line
cosmos-adventures-1-03

Cosmo's Cosmic Adventures

DOS1992protected4.1/5 Apogee Software
cosmicspacehead-1

Cosmic Spacehead

DOS19933.3/5 Codemasters
psychic-war-cosmic-soldier-01

Cosmic Soldier: Psychic War

DOS19893.9/5 Kogado Software Products
cosmic-crusader-01

Cosmic Crusader

DOS19823.7/5 Funatics Software
corridor-7-03

Corridor 7: Alien Invasion

DOS1994protected4.1/5 Capstone
corewar-plus-05

Core War Plus

DOS19843.9/5
conflict-europe-07

Conflict: Europe

DOS19894.2/5 Personal Software Services
Conflict Europe is an abandoned turn-based top-down strategy game set in Europe. The game was developed by Personal Software Services and released by Mirrorsoft in 1989 for DOS, Amiga and Atari ST.
computerunderground-1

Computer Underground

DOS1993freeware3.5/5 Haxsoft
keendreams-1

Commander Keen: Keen Dreams

DOS19924/5 id software
keen5-4

Commander Keen 5: The Armageddon Machine

DOS1991protected4/5 id software
Commander Keen 5: The Armageddon Machine is a science fiction action oriented platform game designed by Tom Hall, developed by id Software and released by Apogee Software in 1991 for DOS only. Commander Keen 5: The Armageddon Machine is part of the Commander Keen game series, specifically it's the second episode of Commander Keen in Goodbye, Galaxy.
keen4-1

Commander Keen 4: Secret of the Oracle

DOS1991protected4/5 id software
keen3-1

Commander Keen 3: Keen Must Die!

DOS1990protected4.2/5 id software
keen2-1

Commander Keen 2: The Earth Explodes

DOS1990protected4/5 id software