Abandonware DOS title

The most popular science fiction games

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?
bionic-commando-06

Bionic Commando

DOS19883.3/5 Capcom
earthworm-jim-2-01

Earthworm Jim 2

DOS1996protected4.4/5 Shiny Entertainment
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.
midwinter2-4

Midwinter 2: Flames of Freedom

DOS19913.8/5 Maelstrom Games
islanddrbrain-1

The Island of Dr. Brain

DOS19923.7/5 Sierra On-Line
rexnebular-1

Rex Nebular and the cosmic gender-bender

DOS1992protected3.9/5 MicroProse Software
carriercommand-1

Carrier command

DOS19894.1/5 Realtime Games
cyclones-05

CyClones

DOS1994protected3.9/5 Raven Software
galaxy-4

Galaxy

DOS19814.1/5 Microcomputer Games Inc.
startrekfinalfront-1

Star Trek V: The Final Frontier

DOS19893.4/5 Mindscape
imperium-3

Imperium

DOS19903.8/5 Electronic Arts
champ-asteroids-01

CHAMP Asteroids

DOS1997remake3.9/5 ChamProgramming corp.
syberia-06

Syberia

Windows XP/98/95Mac OS2002protected4/5 Microids
ascii-sector-02

Ascii Sector

WindowsLinuxDOS2007freeware4/5
apollo18-01

Apollo 18: Mission to the Moon

DOS19874/5 Artech Studios
bio-menace-3-06

Bio Menace Episode 3: Master Cain

DOS1993freeware4.2/5 Apogee Software
starcontrol1-6

Star Control

DOS1990protected4/5 Toys for Bob
starfleet1-battle-begins03

Star Fleet 1: The War Begins

DOSMac OS19853.8/5 Interstel Corporation
epic-4

Epic

DOS1992protected3.9/5 Digital Image Design
projectx-1

Project-X

DOS19943.8/5 Team 17
starquake-1

Starquake

DOS19884/5 Bubble Bus Software
Starquake is a weird DOS science fiction platform game developed by Bubble Bus Software in 1988 and designed by Stephen Crow and Dave Collins. The Commodore 64 version boasts a wonderful soundtrack. Unfortunately, the PC version comes with CGA graphics and no soundtrack.
keendreams-1

Commander Keen: Keen Dreams

DOS19924/5 id software
apachestrike-3

Apache strike

DOS19893.3/5 Activision
thecolony-1

The Colony

DOS19883.2/5
shadow-warrior-1

Shadow Warrior

DOS1997protected3.9/5 3d Realms
space-1889-06

Space 1889

DOS19903.6/5 Paragon Software
Space 1889 is an abandoned top down RPG developed by Paragon Software and released in 1990 for DOS, Atari ST and Amiga. Space 1889 setting is classic science fiction, but is set in the Victorian. It's worth noting that Space 1889 is loosely based on the tabletop game of the same name.
plan9-4

Plan 9 From Outer Space

DOS19923.7/5 Gremlin Graphics / Gremlin Interactive
keen2-1

Commander Keen 2: The Earth Explodes

DOS1990protected4/5 id software
nova9-04

Nova 9: The Return of Gir Draxon

DOS19914.3/5 Dynamix
alphaman-02

AlphaMan

DOS19953.6/5