MissionForce: CyberStorm

Last updated: January 9, 2026

Overview

MissionForce: CyberStorm is a turn-based strategy game developed by Dynamix and published by Sierra On-Line in 1996¹. Set in the Earthsiege/Starsiege universe, the game represents a departure from the real-time mech combat of its predecessors, offering players “BattleTech-style combat instead of first-person sim”². The game challenges players to “command combat in a robot-based universe with a myriad of futuristic weapons and battle systems”³.

Phil Salvador describes it as “one of the greatest turn-based strategy games of its time, an absolute milestone for the genre”⁴. The game combines strategic depth with corporate intrigue, as players take “the part of a hired soldier, and must continually turn a profit or be ousted by the company you’re working for”⁵. CyberStorm was praised for taking “strategy gaming to a new level, with a detailed and rich turn-based game that uses superb graphics and gameplay to challenge even the most experienced gamer”⁶.

Game Info

Developer: Dynamix¹ Designer: Don McClure, Graeme Bayless, John Garvin, Robert Kraft, Stephen Cordon⁷ Publisher: Sierra On-Line¹ Platforms: PC, Windows 95, Windows XP, Windows 7-10⁸ Release Year: 1996 Series: Earthsiege/Starsiege Sierra Lineage: Core Sierra

Story Summary

The game is set in the Earthsiege universe where “you start the game as an Ensign in Unitech, a corporation that achieves power and profit through planetary mining”⁹. The player serves “as a commander of a private military taskforce to fight a race of mechanical beings mankind created long ago called Cybrids”¹⁰. The narrative premise establishes that “Prometheus is believed destroyed, but the Cybrid menace has not ended”¹¹.

The story explores dark themes of corporate exploitation and the dehumanization of warfare. BioDerms, genetically engineered humanoids, “are actually slaves: disposable humanoids to be used on the battlefield, and ‘recycled’ for a few credits or blown up in kamikaze attacks by corporate officers when they are no longer useful”¹⁰. As Salvador notes, the game depicts how “no one can escape the perpetual war machine. Expendable treatment of life begets further mistreatment and the gradual supplanting of human decency by profiteering and self-justification”⁴.

Gameplay

Interface and Controls

MissionForce: CyberStorm features a “top-down isometric view” with “hexagon based movement”⁷. The game utilizes turn-based mechanics where players command squads of customizable mechs called HERCs (Humaniform-Emulation Roboticized Combat units) against AI-controlled Cybrid forces¹². Players can control their units using standard keyboard and mouse inputs⁷.

Structure and Progression

The game’s progression system is built around corporate advancement. “By completing missions and progressing, the player gains rank in order to get access to more advanced equipment and hardware, as well as being able to control more HERCs”¹³. Players can select “missions from Cybrid-controlled planets within a specified system”⁷, with “all maps and enemy locations randomly generated”⁸ to ensure replayability.

Combat sessions typically last “about a half-hour”⁷, making the game accessible for multiple play sessions. The game features “over a dozen different HERC models” and “hundreds of different weapons”⁸, allowing for extensive customization of combat units.

Puzzles and Mechanics

The core mechanics revolve around tactical combat and resource management. Players must balance mission success with profitability, as the corporate structure demands consistent returns. The game includes eight different HERC types ranging from the light “Shadow” and “Remora” to the heavy “Juggernaut,” described as having “the ultimate in offense and defense” and capable of equipping “ANY weapon”¹⁴.

Weapon systems are categorized into types including “Energy, Plasma, Cannons, Missiles, ELF, [and] Advanced”⁷. Players can also “use chemicals to enhance bioderms temporarily”⁸ for tactical advantages. The game supports multiple play modes including “Single Computer, Internet, [and] Play-by-Email”⁷.

Reception

Contemporary Reviews

Publication	Score	Notes
Computer Gaming World	100%	Perfect score from E. Chin, September 199615
PC Games	92%	Shane Mooney, August 199615
GameSpot	8.9/10	Trent C. Ward praised graphics and network play16
Arcane	8/10	Andy Butcher, September 199617
MobyGames	78% (Critics)	Professional reviewers’ average score7

Modern Assessment

The game has maintained strong retrospective appreciation. Home of the Underdogs rated it 9.23¹⁸, while MyAbandonware describes it as “one of the best giant robot strategy games ever made, bar none”². User reviews on GameSpot average 8.5/10, with players praising the “excellent turn based combat in the brilliant Starsiege universe”¹⁹.

However, the game faced criticism for accessibility. One reviewer noted that “MissionForce: Cyberstorm is a ton of fun to play, but it isn’t very deep – a con for more hardcore strategy gamers, but a nice touch for those who like their turn-based strategy games to be somewhat lightweight”⁵. Despite this, “gamers almost universally preferred this to the sequel, Cyberstorm 2: Corporate Wars”²⁰.

Development

Origins

MissionForce: CyberStorm emerged from Dynamix’s successful Earthsiege franchise, transitioning the real-time mech combat into a turn-based strategy format. The game was “part of the Metaltech/Tribes universe”⁷ and served as both a “sequel to Earthsiege [and] predecessor to Cyberstorm 2: Corporate Wars”⁷.

Production

The development team at Dynamix was responsive to player feedback. The v1.1 patch included “features based on user requests and early feedback”²¹, with developers stating “Many of these features are a direct result of the great user requests and early feedback we received”²¹. The patch was originally planned for “fall 1996 release but was delayed due to extra features and holiday product fine-tuning”²².

The game included “a mission editor for creating custom scenarios”⁷ and shipped on “two play-discs”⁷. System requirements included a “486-50 MHz” processor, “8MB” of RAM, and “40-360 MB” of hard disk space⁷.

Technical Achievements

CyberStorm featured advanced graphics for its time, utilizing “Super VGA 640x480” resolution with “256 colors”⁷. The game supported various multiplayer modes including “LAN, Modem, 2-8 players”⁷ and was “possible to play online via Sierra’s WON.NET”⁸. Audio was compressed using “IMA ADPCM audio compression with reversed nibbles from standard IMA format”²³.

Legacy

MissionForce: CyberStorm received significant recognition, earning placement as the “PC Gamer UK 53rd Best Computer Game” in 1997²⁴ and winning “Computer Gaming World #12 Best Way To Die In Computer Gaming” in 1996²⁴. The game’s influence on turn-based strategy gaming was substantial, with Andy Butcher of Arcane Magazine noting that “CyberStorm is excellent, and will be a tough act to follow for any other strategy-based ‘big robot’ game”¹.

Modern preservation efforts have kept the game accessible, with community developers creating compatibility patches for newer Windows versions²⁵. The game was eventually released on GOG.com in 2019²⁶, described as offering “unlimited replayability while you create the ultimate fighting machines”²⁶.

Downloads

Purchase / Digital Stores

• GOG.com

Download / Preservation

• MyAbandonware
• Internet Archive

Series Continuity

• Previous: Earthsiege 2
• Next: CyberStorm 2: Corporate Wars

References

Footnotes

1. Wikipedia - MissionForce: CyberStorm – - Release date and developer information ↩ ↩² ↩³ ↩⁴

2. MyAbandonware – - Gameplay style comparison ↩ ↩²

3. Amazon Strategy Guide – - Game description ↩

4. The Obscuritory – - Critical assessment ↩ ↩²

5. Old PC Gaming – - Core gameplay mechanics ↩ ↩²

6. Internet Archive Demo – - Marketing description ↩

7. MobyGames – - Development team credits ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵

8. PC Gaming Wiki – - Platform compatibility ↩ ↩² ↩³ ↩⁴ ↩⁵

9. GameSpot Review – - Story setup ↩

10. StrategyWiki – - Plot overview ↩ ↩²

11. Internet Archive – - Narrative premise ↩

12. Reddit Discussion – - Basic gameplay description ↩

13. KHInsider – - Progression mechanics ↩

14. GameFAQs Guide – - Juggernaut description ↩

15. The Computer Show – - Contemporary review scores ↩ ↩²

16. Alchetron – - GameSpot review details ↩

17. Wikipedia – - Arcane review score ↩

18. Itch.io Patch – - Home of the Underdogs score ↩

19. GameSpot User Reviews – - User ratings ↩

20. GameFAQs FAQ – - Sequel comparison ↩

21. Internet Archive Patch – - Development feedback ↩ ↩²

22. The Exiled Wiki – - Patch timing ↩

23. Name That Tech Blog – - Audio compression details ↩

24. Gamicus Wiki – - PC Gamer ranking ↩ ↩²

25. GitHub Preservation Project – - Community patches ↩

26. Internet Archive GOG Release – - GOG release ↩ ↩²