Open source (159)

Relentless: Twinsen's Adventure

Also known as Little Big Adventure, LBA

Adventure, 1994
Playable demo, Preview

Rise of the Triad

Also known as ROTT, Rise of the Triad: The HUNT Begins, Rise of the Triad: Dark War

First-Person Shooter, 1994
Shareware (installed), Shareware, Game expansion, Extra

Rival

Also known as Rival Chess

Traditional, 1993
Shareware, Source code, Full version

Robot Redemption

First-Person Shooter, 2014
Freeware

Rocks 'N' Diamonds

Puzzle, 1998
Freeware

Rogue

Also known as Rogue: Exploring the Dungeons of Doom

Role-Playing, 1984
Freeware

Rogue Clone IV

Also known as DOS Rogue Clone

Role-Playing, 2001
Freeware, Source code

The Rustic Classics

Arcade, 2000
Freeware (installed), Freeware, Source code

Scavenger

Platform, 1996
Full version (installed), Full version

The Secret of the Pyramid

Also known as RA

Platform, 1997
Freeware, Source code

Shadow Warrior

Also known as SW, Shadow Warrior 3D, Ninja Master

First-Person Shooter, 1997
Shareware (installed), Shareware, Update

Shaw's Nightmare

First-Person Shooter, 2013
Freeware, Freeware, Source code, FAQ, Extra

Shaw's Nightmare: Fotom Pak

First-Person Shooter, 2017
Freeware

Ski Jump International v3

Also known as SJ3

Sport, 2000
Full version

SLASH

Role-Playing, 1996
Freeware, Source code

SLASH'EM

Also known as Slash'EM

Role-Playing, 1997
Freeware, Source code, System component