Space Quest III

Space Quest III: The Pirates of Pestulon
Cover art by John Shaw
Developer(s)	Sierra On-Line
Publisher(s)	Sierra On-Line
Designer(s)	Mark Crowe Scott Murphy
Programmer(s)	Scott Murphy Doug Oldfield Ken Koch Chris Smith
Writer(s)	Mark Crowe Scott Murphy
Composer(s)	Bob Siebenberg
Series	Space Quest
Engine	SCI0
Platform(s)	DOS, Macintosh, Amiga, Atari ST
Release	March 24, 1989
Genre(s)	Adventure
Mode(s)	Single-player

Space Quest III: The Pirates of Pestulon is a 1989 graphic adventure game by Sierra On-Line, and the third game in the Space Quest series.

Roger Wilco's escape pod from the end of Space Quest II is floating in space until it is picked up by an automated garbage freighter. Finding a derelict spaceship amongst the freighter's garbage, Roger sets out to repair the Aluminum Mallard and leave the scow.

Roger visits a variety of locations, including a fast food restaurant called Monolith Burger and a desert planet called Phleebhut. At the latter, he encounters trouble, as Arnoid the Annihilator (an Arnold Schwarzenegger-like android terminator) hunts him for not paying for a whistle in Space Quest II (a continuity error in that the order form for the whistle clearly stated that it was in fact free). From information he picks up there and at Monolith Burger, Roger eventually discovers the sinister activities of a video game company known as ScumSoft, run by the "Pirates of Pestulon".

Pestulon, a small moon of the volcanic planet Ortega, is covered in soft, moss-like vegetation, and dotted with twisted tree-like growths throughout. Elmo Pug, the CEO of ScumSoft, has abducted the Two Guys from Andromeda and is forcing them to design awful games.

Roger manages to sneak into the supposedly impregnable ScumSoft building and rescue the two programmers. He is discovered, and must battle Pug in a game that combines giant Mecha-style combat with Rock 'Em Sock 'Em Robots. After winning, Roger and the Two Guys escape. In the game's conclusion, Roger delivers the two game designers to Sierra On-Line's president, Ken Williams, on Earth.

PC versions of the game support mouse movement and a new, heavily improved text parser. Mouse movement was still in a primitive state at the time of the game's release, so Roger is unable to automatically find his way around obstacles in the game world, instead stopping if he encounters a barrier. Computer mice were relatively new at the time, and Sierra's mouse movement would greatly improve in subsequent games.