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MechWarrior 4: Vengeance is a computer game developed by FASA Interactive and published by Microsoft. It was released on November 24, 2000. This game is the fourth game in the MechWarrior series. It takes place in BattleTech universe where the pinnacle of all war machines are huge, heavily armed robots called BattleMechs. The player pilots one of these 'Mechs and uses a variety of available weapons to battle enemy 'Mechs, tanks and other vehicles. An expansion pack, MechWarrior 4: Black Knight, was released on October 31, 2001, and a subsequent stand-alone expansion, MechWarrior 4: Mercenaries was released in November 7, 2002.

Free Release

To celebrate the BattleTech Universe's 25th anniversary, a free release of MechWarrior 4 was planned, but legal red tape held the release back by a year. Fortunately, the MechWarrior 4 Free Release saw the light of day and is available at For more information, please consult the MekTek MechWarrior 4 Free Release page.


The game takes place on the Inner Sphere planet Kentares IV and its moon. The player takes control of Ian Dresari, son of famed Clan War hero Duke Eric Dresari and heir to the throne of Kentares.

A civil war erupts on the planet after William Dresari, a cousin of Ian, betrays the family and seizes the throne for himself under the banner of Katherine "Katrina" Steiner. A surprise attack by Steiner forces on the Dresari royal palace leaves the majority of the royal family dead. Ian meets up with his uncle Sir Peter Dresari on the moon orbiting Kentares to launch a guerrilla campaign to take back Kentares IV from Steiner. Ian fights alongside fellow resistance MechWarriors, Casey Nolan, Jen McQuarrie, and Jules Gonzales, and their commander Elise Rathburn in various missions. The resistance abandons its base on the moon and sets up camp for the first time in Kentares' arctic regions.

There are two possible endings to this game which depend on actions taken by the player throughout the game.

Game Modes


The campaign contains 26 missions divided into 7 "ops", each with different environments. Each operation contains about 3-6 objectives, with the exception being Op 7. In the first few missions only a few smaller 'Mechs are available. As the game progresses, more 'Mechs and weapons become available. These come in the form of salvage from previous missions. Between missions the player can outfit 'Mechs with different weapons and also assign 'Mechs to one of your three Lancemate slots.

Instant Action

This mode lets you play with any of the 21 'Mechs in the game. You can play any of the campaign missions (even those which you cannot access in campaign yet) or wave missions in which you can select up to four other 'Mechs and fight them in a deathmatch.

There is also a master trial mode in which the computer randomly picks a stock 'Mech for you. It also randomly picks one map to play on and three stock 'Mechs as enemies. You have to successively destroy all three enemies in a one-on-one fight.


Multiplayer has 9 game types and about 12 maps built in, with more user-made maps available for download.

The hud of a mech

Game types:

  • Destruction - simple deathmatch
  • Team Destruction - team deathmatch.
  • Attrition - similar to deathmatch, but points are awarded for damage dealt.
  • Team Attrition - Attrition, but in teams.
  • Capture the Flag - points are awarded for bringing the flag from enemy base to yours.
  • King of the Hill - points are awarded for staying in specific area of the map.
  • Team King of the Hill - King of the hill, but in teams.
  • Steal the Beacon - points are awarded for carrying the beacon.
  • Escort - points are awarded for destroying enemy VIP (a small 'Mech).

The multiplayer is no longer hosted by Microsoft, and it isn't supported by MSN Zone. However, Gamespy Arcade still works.

The 'Mechs

'Mechs are classified into four weight categories. They are also either from Clans or Inner Sphere. Clan 'Mechs are generally superior to Inner Sphere 'Mechs of the same weight.

Inner Sphere ‘Mechs

Light ‘Mechs

Manufacturer: Hellespont 'Mech Works
Model: RVN-3L
Class: Light
Cost: 5,701,725 C-bills
Mass: 35 tons
Chassis: Hellespont Type R
Armor: Hellespont Lite Ferro-Fibrous
Engine: Hermes 210 XL
Communications System: Ceres Metals Model 666 w/Guardian ECM Suit
Speed: 97.2 km/h km/h
Jump Jets: None
Armament: 1xSRM-6, 2xMedium Lasers, 1xBeagle Active Probe, 1xNarc Missile Beacon, 1xTAG, 1xGuardian ECM Suite
Manufacturer: Achernar BattleMechs[1]
Model: OSR-3D
Class: Light
Cost: 5,243,550 C-bills
Mass: 30 tons
Chassis: FITES-O Endo Steel
Armor: StarGuard Ferro-Fibrous
Engine: Pharaoh 240 XL
Communications System: Achernar Electronics HID-8.7
Speed: 129.6 km/h
Jump Jets: Rawlings 61
Armament: 5xER Medium Lasers, 1xSRM-6, 1xMachine Gun

Medium ‘Mechs

Manufacturer: TharHes Industries
Introduced: 3053
Model: BSW-X1

Class: Medium
Mass: 55 tons
Chassis: Earthwerk GRF
Armor: Kallon Unity Weave Ferro-Fibrous with CASE
Engine: Hermes 275 XL
Speed: 86.4 km/h
Jump Jets: None
Armament: 1xAutocannon/10, 2xLRM-5s, 1xER Large Laser, 2xMachine Guns

Manufacturer: Brigadier Corporation, Independence Weaponry, Kressly Warworks (under license)
Introduced: 3063[1]
Model: CMA-1S
Class: Medium
Cost: 6,737,500 C-bills
Mass: 40 tons
Chassis: Chameleon Light Endo 2 Endo Steel
Armor: StarGuard CCM
Engine: GM 240 XL
Communications System: Corean Transband-J12
Speed: 97.2 km/h
Jump Jets: Rawlings 40
Armament: 1xMachine Gun, 1xER Large Laser, 1xER Medium Laser, 1xMRM-20
Manufacturer: General Motors[1]
Introduced: 3062[2]
Model: HSN-7D
Class: Medium
Cost: 8,375,200 C-bills
Mass: 45 tons
Chassis: GM Fury-M Endo Steel
Armor: StarGuard III
Engine: GM 270 XL
Communications System: Dalban SuperMicronics w/Guardian ECM
Speed: 97.2 km/h
Jump Jets: Rawlings 80
Armament: 3xMedium Pulse Lasers, 2xLRM-10s
Manufacturer: Defiance Industries
Model: UZL-3S
Class: Medium
Cost: 9,785,700 C-bills
Mass: 50 tons
Chassis: Foundation E50 Endo Steel
Armor: Maximillian 100
Engine: GM 300 XL
Speed: 97.2 km/h
Jump Jets: Rawlings 50
Armament: 1xLB-X Autocannon/2, 1xER Medium Laser, 1xLarge Pulse Laser, 2xER Small Lasers, 1xSRM-6

Heavy ‘Mechs

Manufacturer: Achernar BattleMechs, Robinson Standard BattleWorks
Introduced: 3059[1]
Model: AGS-4D
Class: Heavy
Cost: 11,978,400 C-bills
Mass: 60 tons
Chassis: 1A Type 12 Endo Steel
Armor: StarGuard II with CASE
Engine: GM 300 XL Engine
Communications System: Achernar Electronics HID-8.7
Speed: 86.4 km/h
Jump Jets: None
Armament: 1 x Rotary Autocannon/5, 1 x Machine Gun, 1 x LRM-10, 2 x ER Medium Lasers
Manufacturer: Hollis Incorporated, Yori 'Mech Works
Introduced: 2561[1]
Model: CPLT-C1
Class: Heavy
Cost: 5,790,125 C-bills
Mass: 65 tons
Chassis: Hollis Mark II
Armor: 10 tons of Durallex Heavy
Engine: Magna 260
Speed: 64.8 km/h
Jump Jets: Anderson Propulsion 21
Armament: 2xLRM-15s, 4xMedium Lasers
Manufacturer: StarCorps Industries
Model: TNS-4S
Class: Heavy
Cost: 19,339,249 C-bills
Mass: 75 tons
Chassis: StarFrame Heavy Endo Steel
Armor: Durallex Heavy
Engine: PlasmaStar 375 XL
Speed: 86.4 km/h
Jump Jets: Audi-Fokker Mark IV
Armament: 1xMRM-20, 1xER Large Laser, 2xER Medium Lasers, 1xMedium Pulse Laser, 1xC3 Slave Unit, 1xECM Suite

Assault ‘Mechs

Manufacturer: Yori 'Mech Works, Defiance Industries, Independence Weaponry, Robinson Standard BattleWorks
Introduced: 2755
Model: AS7-D
Class: Assault
Cost: 9,626,000 C-bills
Mass: 100 tons
Chassis: Foundation Type 10X
Armor: Durallex Heavy Special
Engine: Vlar 300
Communications System: Angst Discom
Speed: 54.0 km/h
Jump Jets: None
Armament: 1xAutocannon/20, 1xLRM-20, 1xSRM-6, 4xMedium Lasers
Manufacturer: Technicron Manufacturing, Irian BattleMechs Unlimited
Introduced: 2665
Model: AWS-8Q
Class: Assault
Cost: 6,598,170 C-bills
Mass: 80 tons
Chassis: Technicron Type G
Armor: Durallex Heavy
Engine: Pitban 240
Speed: 54.0 km/h
Jump: Jets None
Armament: 3xPPCs, 1xSmall Laser
Manufacturer: Luthien Armor Works
Introduced: 3048[1]
Model: MAL-1R
Class: Assault
Cost: 18,399,600 C-bills
Mass: 90 tons
Chassis: Alshain Class 101
Armor: New Samarkand Royal Ferro-Fibrous with CASE
Engine: Hermes 270 XL
Speed: 54.0 km/h
Jump Jets: None
Armament: 2xER Large Lasers, 2xLRM-15s, 4xAutocannon/2s

Clan ‘Mechs

Light ‘Mechs

Manufacturer: Ironhold Alpha Complex (Clan Jade Falcon)
Introduced: 3058[1]
Model: Prime
Class: Light
Cost: 6,065,438 C-bills
Mass: 35 tons
Chassis: JF 3 Light Endo Steel
Armor: Compound JF Ferro-Fibrous
Engine: 175 JF Extralight
Speed: 86 km/h
Jump Jets: None
Armament: 2x Large Pulse Lasers, 2x LRM-10s

Medium ‘Mechs

Shadow Cat
Manufacturer: Barcella Beta
Introduced: 3003
Model: Prime
Class: Medium
Cost: 11,785,510 C-bills
Mass: 45 tons
Chassis: Type 79-45 Endo Steel
Armor: Compound H17 Ferro-Fibrous with CASE
Engine: RFUM 270 XL
Speed: 97 km/h (130 km/h with MASC)
Jump Jets: Model KY Boosters
Armament: 1x Gauss Rifle, 2x ER Medium Lasers

Heavy ‘Mechs

Manufacturer: Various
Introduced: 2926
Model: Prime
Class: Heavy
Cost: 19,074,687 C-bills
Mass: 65 tons
Chassis: T-E H65 Standard
Armor: Forging Omni-H24
Engine: Fusion 325 XL
Communications System: CH2B Alpha-Com
Speed: 86.4 km/h
Jump Jets: None
Armament: 1xAnti-Missile System, 2xER PPCs, 4xAnti-Personnel Pods, 3xER Medium Lasers, 1xStreak SRM-6, 2xMachine Guns
Mad Cat
Manufacturer: Wolf Clan Site #2, Wolf Clan Site #1
Introduced: 2945
Model: Prime
Class: Heavy
Cost: 24,233,124 C-bills
Mass: 75 tons
Chassis: Type W3 Endo-Steel
Armor: Composite A-2 Ferro-Fibrous
Engine: Starfire 375 XL
Speed: 86.4 km/h
Jump Jets: None
Armament: 2xER Large Lasers, 2xER Medium Lasers, 1xMedium Pulse Laser, 2xLRM-20s, 2xMachine Guns
Nova Cat
Manufacturer: Barcella Alpha, Irece Alpha
Model: Prime
Class: Heavy
Cost: 17,672,917 C-bills
Mass: 70 tons
Chassis: Mynx Type Heavy
Armor: Alpha Compound Plate
Engine: Consolidated 280 XL Fusion
Speed: 65 km/h
Jump Jets: None
Armament: 3 ER Large Lasers, 2 ER PPCs
Manufacturer: Eagle Craft Group, St. Louis MechWorks
Introduced: 2872
Model: Prime
Class: Heavy
Cost: 21,320,834 C-bills
Mass: 70 tons
Chassis: JFS-703
Armor: J63-3E Ferro-Fibrous
Engine: Redline 350 XL
Speed: 86.4 km/h
Jump Jets: JF Standard
Armament: 1xLB 10-X Autocannon, 1xLRM-15, 1xER PPC
Manufacturer: Various
Introduced: 2963
Model: Prime

Class: Heavy
Cost: 15,292,000 C-bills
Mass: 60 tons
Chassis: Eden Mk 60-OM
Armor: Compound SJ6CW Ferro-Fibrous
Engine: 300 Type I XL
Communications System: Build OSJ-41
Speed: 86.4 km/h
Jump Jets: None
Armament: 2x LRM-20s, 2x Medium Pulse Lasers, 2x Large Pulse Lasers

Assault ‘Mechs

Manufacturer: Wolf Clan Site #1
Introduced: 3010
Model: Prime
Class: Assault
Cost: 29,350,000 C-bills
Mass: 100 tons
Chassis: Titan HX Standard
Armor: Compound 12B2 Standard
Engine: Starfire 300 XL
Speed: 54 km/h
Jump Jets: None
Armament: 4 x ER Large Lasers, 4 x Medium Pulse Lasers, 2 x Ultra Autocannon/5s, 1 x LRM-10
Mad Cat Mark II
Manufacturer: Manufacturing Plant DSF-94
Introduced: 3066
Class: Assault
Cost: 24,036,900 C-bills
Mass: 90 tons
Chassis: DSAM Endo 4
Armor: Forging ZM15 Ferro-Fibrous
Engine: Type 79 360 Fusion XL
Speed: 68 km/h
Jump Jets: Grandthrust Mk. 5
Armament: 2 x Gauss Rifles, 2 x LRM-10s, 4 x ER Medium Lasers


Mechwarrior 4 features vastly simplified gameplay compared to previous Mechwarrior entries. Players use their 'Mechs weaponry to attack other 'Mechs as well as tanks, aircraft and buildings. Like previous BattleTech games, weapons generate heat and players must manage their firing rates to prevent overheating.

In Mechwarrior 4, players no longer have to worry about cooking off their ammunition at high heat levels however. Destroying a 'Mech's legs is no longer instant death. Instead destroying a leg means the leg is merely "crippled" causing a severe speed drop as well as removing the ability to walk backwards. Players can no longer direct their jump jets and jump jets merely allow the 'Mech to jump into the air for a period of time.

Like previous games, the damage model is color coded ranging from Green, Yellow, Orange, Red, flashing Red and Black; Green is full or near full armor and Black is completely destroyed. Weapons destruction typically happens when the part is flashing Red. There is an odd property in the damage model where attacking a destroyed body part will not only transfer the damage to another body part but also bypass some of the armor on that part. The leg will transfer damage to the other leg and the left and right torsos will transfer damage to the center torso.

The 'Mech Lab has also been simplified. In previous entries, players must assign where they want to carry ammunition and heatsinks. This is no longer the case in Mechwarrior 4. Ammunition and heatsinks simply take up weight. Heatsinks cannot be destroyed and destroying the weapon will also destroy the ammunition assigned to that weapon. Players can no longer assign what type of engines they want and the types of equipment that a 'Mech can carry is preset. Jump jets can only be put on certain 'Mechs and players can no longer choose how many jump jets they want.

Weapon placements are now color coded: Red for energy, Green for missiles and Yellow for ballistics. Weapons take up slots, with more powerful weapons such as the PPC taking up three or even four slots. The 'Mechs have a certain amount of color coded slots on each hardpoint and only weapons that match the color can be placed there. Clan 'Mechs and some Inner Sphere designs have white colored "Omni slots" which allow any weapon to be placed there. Ammunition for missiles and ballistics can be added in one ton increments.

Players can assign the tonnage of armor to each part of the 'Mech in 0.1 ton increments, with minimum being 0.1 tons of armor on the part and the maximum predetermined based on the 'Mech. There are three types of armor. The standard Ferro Fibrous armor provides the base amount of protection. Reflective and Reactive armor types weight twice as much but halves the damage from energy and ballistics weapons respectively. Parts in Mechwarrior 4 require at least two hits to destroy regardless of armor. Therefore a 'Mech with only 0.1 tons of armor on the center torso can take a direct hit from a PPC but still operate. Because of this mechanic, players often remove all the armor from the head and rear torso; these parts are incredibly hard to hit and even if they are hit, they require at least two shots to be completely destroyed.

'Mech Packs

In August 2002 Microsoft released two add-ons to MechWarrior 4: Vengeance, the Clan 'Mech Pack and Inner Sphere 'Mech Pack. Each pack contains four new 'Mechs and a few other bonuses. Many players were disappointed by the fact that new 'Mechs can be used only in instant action or multiplayer, and not in campaign.

'Mechs from Clan 'Mech Pack:

  • Arctic Wolf - Medium
  • Cauldron-Born - Heavy
  • Kodiak - Assault
  • Masakari - Assault

'Mechs from Inner Sphere 'Mech Pack:

  • Dragon -Heavy
  • Highlander - Assault
  • Hunchback - Medium
  • Zeus - Assault


CD Cover

The Mechwarrior 4: Vengeance soundtrack was composed by Duane Decker and released on CD in 2000.

7.Mechwarrior 4 Opening Sequence4:18
9.Kick It2:37
10.Action Pack1:47
11.Campaign Opening Video3:06
13.Eerie Theory1:10
14.Emmity Road2:01
15.Closing Video A1:29
18.Slow Burn2:25
20.Wednesday 71:32
21.Let There Be3:04
24.Closing Video B1:26
25.Steiner Defeat2:33
31.Stutter Shark2:28
32.Davion Theme2:20

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