Open source (186)

CGA Cave

Also known as Colossal Grand Adventure Cave

Adventure, 2014
Freeware, Source code, Editor

Chenard

Traditional, 1996
Freeware, Freeware, Source code

Chickens 2

Shooter, 1998
Freeware

Chopper Commando

Shooter, 1990
Full version

The Clue!

Also known as Der Clou!

Adventure, 1994
Playable demo, Full version, Extra

Command & Conquer

Also known as Command & Conquer: Tiberium Dawn, C&C

Real-Time Strategy, 1995
Playable demo, Playable demo, Extra

Command & Conquer: Red Alert

Real-Time Strategy, 1996
Preview, Playable demo, Extra

Crystal Stacker

Puzzle, 2001
Freeware, Freeware, Source code

csol

Traditional, 2017
Freeware, Freeware

Cyberdogs

Also known as Dogs

Shooter, 1994
Freeware, Patch, Update, Source code

Cylindrix

First-Person Shooter, 1996
Playable demo (installed), Full version, Source code

Dark Ages I: The Continents

Also known as DA1

Role-Playing, 1998
Freeware

Descent

Also known as Inferno, Descent 1

First-Person Shooter, 1994
Shareware (installed), Shareware, Shareware

Descent II

Also known as Descent 2

First-Person Shooter, 1995
Playable demo (installed), Playable demo, Playable demo, Preview, Extra

Digger Remastered

Arcade, 1999
Freeware, Freeware, Freeware, Extra, Source code

DOOM

Also known as Doom: Evil Unleashed

First-Person Shooter, 1993
Shareware (installed), Shareware, Shareware