DOS games developed by Sierra On-Line, Inc.

CTA Developments was a British game studio founded in 1991 near Bristol by John Scott and Richard Cheek, and it is best remembered in DOS gaming for Sleepwalker...

Tiertex Design Studios was a renowned video game developer known for creating some of the most memorable DOS games of the 1980s and 1990s. The company gained re...

Founded as a subsidiary of Atari Games, Tengen specialized in bringing arcade sensations to home platforms, including the DOS environment. With a name derived f...