Errata

Mistakes happen, and sometimes players come up with situations the BattleTech designers, writers and testers never imagined. If you believe you’ve found a problem, report it in the appropriate thread on our forum.  Catalyst rolls in all approved errata every time a product is reprinted. See this post for a master index of links to individual errata threads.

Below is all official errata issued for our products. For books with multiple printings, check the last page of the credits section to determine what printing you have. If it’s any printing past the first, this will be noted on that page (e.g. “Corrected Fifth Printing”).

Errata last updated 12 December 2022.

BOX SETS

A Game of Armored Combat Errata version 6.02

This PDF is 249KB.

 

 

 

CORE RULE BOOKS

 

BattleMech Manual Errata version 6.01

 

 

 

 

This PDF is 449KB.

In addition, there is one other download for the 1st printing of the BattleMech Manual. This corrects the 1st printing’s flawed flowchart on page 42:

BattleMech Manual Corrected Damage Flowchart p. 42

 

Total Warfare Errata version 9.0

 

 

 

 

This PDF is 622KB.

 

TechManual Errata version 6.0 – General Changes

 

 

 

 

This PDF is 819KB.

In addition, there are two other downloads for TechManual. The first replaces pages 302-314 as well as page 319, the second replaces pages 349-352. Both are featured in the third printing and up, but are released here separately for your convenience.

TechManual Errata version 4.1 – Battle Value (June 2021)
TechManual Errata version 4.1 – Infantry Weapon Tables (June 2021)

 

Tactical Operations: Advanced Rules Errata version 6.0

 

Tactical Operations: Advanced Units & Equipment Errata version 6.0

 

Tactical Operations Errata version 3.03

This PDF is 1,046KB.

Note that this is for the original 424-page single-volume version only. This version of Tactical Operations has been replaced by the above two-volume version; no further errata will be produced for this version.

 

Strategic Operations Errata version 3.02

This PDF is 468KB.

Note that this is for the original 448-page version of Strategic Operations only, not the current version (subtitled “Advanced Aerospace Rules”, 184 pages).

 

Interstellar Operations Errata version 1.21

This PDF is 253KB.

This version of Interstellar Operations has been replaced by the two-volume version (Alternate Eras and BattleForce); no further errata will be produced for this version.

 

Campaign Operations Errata version 3.0

This PDF is 251KB.

Note that this errata is for the revised 256-page version only (the second printing and later), not the original 192-page first printing.

 

A Time of War Errata version 3.0

This PDF is 366KB.

 

 

 

A Time of War Companion Errata version 1.1

This PDF is 229KB.

 

 

 

MechWarrior: Destiny Errata version 2.0

This PDF is 180KB.

 

 

 

Alpha Strike Commander’s Edition Errata version 5.1

This PDF is 480KB.

 

 

 

 

Alpha Strike Errata version 2.5

This PDF is 625KB.

This is the original version of Alpha Strike. It has been replaced by Alpha Strike: Commander’s Edition; no further errata will be produced for this version.

 

Alpha Strike Companion Errata version 1.6

This PDF is 549KB.

In addition, there is one other download for the Companion, which clarifies the heat conversion process:

Alpha Strike Companion Converting Heat Errata version 1.3

 

TRO Clan Invasion Errata version 3.0

This PDF is 281KB.

 

 

Battle of Tukayyid Errata version 2.0

This PDF is 275KB.