08 Sep 2026Developer post

Home of Wargamers 2026 is almost here

Home of Wargamers 2026 is almost here. Our yearly live showcase, streamed on Twitch and YouTube, returns on September 30th with fresh announcements, updates and a look behind the scenes at what's coming from Matrix Games. This edition brings together longtime fan favorites and br

02 Mar 2026Developer post

v1.07.03 update out now

v1.07.03 is the latest update for Decisive Campaigns: Ardennes Offensive. We introduce a new scenario covering the action around Mortain, alongside a number of small tweaks and changes across all scenarios. Full changelog: New scenario Mortain 7-9 aug.1944 Minor changes, tweaks,

08 Mar 2024Developer post

Update 1.07.01

We're excited to announce the release of a new update. This update brings you a new scenario, along with improvements to the AI. We've also made updates to various maps and scenarios. "Patton's Drive to Prum" scenario DC:AO 1.07.01 Official Changelog : - New February '45 Scenario

We're excited to announce the release of a new update. This update brings you a new scenario, along with improvements to the AI. We've also made updates to various maps and scenarios.

"Patton's Drive to Prum" scenario

DC:AO 1.07.01 Official Changelog:

- New February '45 Scenario added “Patton’s Drive To Prum”
- Fix png BIG icons for 13th and 19th US Corps
- Map update for Wacht, Plan, Werbomont, St.Vith: added locations: Amel, Mirfeld, Medell, Hunningen, Emmels, Breitfeld, Petit-Thier, fix position Ville.duBois
- Fix 277.VG Division 989.VG Regiment (wrong 289.)
- Updated American Officers library (added Gen. Blakeley and Rooks)
- Updated German Officers Library (added Gen. Kühn and Botsch)
- AI attacks a bit more prudently
- AI sees more interest on picking on (really) low morale enemy units
- AI better sees the value of its really strong equipment as for example Tiger Tanks
- AI made quite some reduction in its tendency to do excessive shuffling (but still some work remaining)
- AI tries to not overdoing the number of units joining in an attack and just freeing other units up for other tasks
- AI is more aware of the possibility to get cut-off and we should see less AI units putting their head to far down a noose
- Started work on a very big AI improvement (very promising results), but this is really complicated stuff and will take (at least) the remainder of the year 2024 to finish and roll out.
- Scenarios VP count in Victory Message upon actual Victory are fixed (but does require new scenario start with v1.07)
- Improved the VP bar mouse-over for Draw games
- Fixed a glitch where during the AI turn several human-controlled Units were put to March Mode
- Added some fallback code for a graphics rendering bug with the Prefs Tab in very low resolutions
- Fixed Combat Setup Window to include ranged units up to 32 hexes away (instead of 16)
- Added extra safety code around the Combat Setup Window to avoid crashes with the combat odds calculations in clicking to fast. I think this should do the trick, it was hard to replicate.
- Fixed bad combat odds preview for werfer
- Some smaller scenario fixes

"St Vith Map Update"

Original post

17 Oct 2023Developer post

Decisive Campaigns: Ardennes Offensive major update out now

A new Decisive Campaigns: Ardennes Offensive update (v. 1.06.00) has been released. It comes with a lot of small fixes and quality of life improvements, but its main highlights are: New content: brand new November 1944 Puffendorf scenario AI improvenments Here's the full changeli

27 Apr 2022Developer post

Plan Martin - New Campaign Scenario

A new Decisive Campaigns Ardennes Offensive update (v. 1.02.00) has been released. It comes with a lot of small fixes and quality of life improvements, but it's main highlight is the introduction of a brand new campaign scenario: Plan Martin. "Plan Martin " is von Rundsted's prop

A new Decisive Campaigns Ardennes Offensive update (v. 1.02.00) has been released.

It comes with a lot of small fixes and quality of life improvements, but it's main highlight is the introduction of a brand new campaign scenario: Plan Martin.

"Plan Martin " is von Rundsted's proposed plan for the Ardennes Offensive, with a wider frontline and the participation of the German 15.Army in the main attack:

Phase I : Encirclement of Aachen with 15.Army from the north and 6.Pz.Army from the south and reach the Meuse line with 5.PzArmy and 7.Army.
Phase II : Advance to Antwerp from Namur (7.Army), Liege (5.PzArmy) Aachen (6.PzArmy).
Phase III : to Antwerp !

The scenario is a historical "what if?" because all the units deployed are historically available to both players. Three more High Level HQ were added to the OOB, General von Zangen German 15.Army, General Simpson US 9th Army and General Dempsey British 2nd Army.

The huge Campaign map is 155 x 156 hexes/km , 40 more hexes north than the Wacht am Rhein map.

Change History v1.02.00:

Changed the IF/SET Logic processing and you can now pass strings in “” to exe or chk functions like exe(237,”VR Basic Lib”,”VictoryLastRound”,30)
Made some improvement to AI artillery usage (less moving around! More firing!)
Made some improvement to AI covering important hexes in some cases
Redid combat calculations with indirect ranged attack capacity individuals (like artillery guns)
firing on enemy individuals that have broken through or are in direct combat for the hex. Artillery (and other such troops) now more vulnerable to assaults by combat troops.
Finetuned attack accidents to only happen now when making a KILL (no longer on scoring a RETREAT).
Furthermore attack accidents & mechanical breakdowns during combat no longer will happen during ranged fire
Improved supply deliveries in all scenarios (about +20%)
Fixed crash with Cards Tab
Editor addition: Added two optional combat modifiers (as well as reconSkill option) to the People data structure (accessible in historical editor). Note that A reconSkill >0 is only advised for trained specialist reconnaissance troops. If >0 it means the troops when ambushed will automatically fight in PROBE attack mode (reducing their casualties). Furthermore any recon points will be multiplied by the reconSkill. So for scouts a reasonable value to set reconSkill to is maybe 2 or 3
One US roadblock card x turn
Map fortification white dot, fixed
Tanks unreliability reduced Tiger 1, TigerII 3, Panther 1, captured Sherman 2
Ground levels >3 on maps checked and fixed
Minor maps and oob fixes
Improved scroll and map screen render speed a bit
Improved DPI scaling speed and quality a lot (Prefs Tab)
Defensive Intercept Fire now added to Firelist so you can locate it (or not) after battle
Rule revision: Vigor recuperation: Note that Intercept Fire (even defensive) does not count as an attack now
PBEM games on Steam version now save in the same cloud-linked directory
Some small AI improvements for tactical movements
ZOC can now longer capture Supply Source (you need to actually move a unit in now)
Paradrop cards can no longer target enemy within 8 hexes (or more in large scenarios) of enemy Supply Sources (it is too gamey to do this!)

Original post

10 Feb 2022Developer post

Decisive Campaigns: Ardennes Offensive - out on Steam

Decisive Campaigns: Ardennes Offensive , the fourth wargame in the Decisive Campaigns series, is now available on Steam Decisive Campaigns: Ardennes Offensive is a real, classic hex-and-counter wargame at its core. Covering the battles in the Ardennes between December 1944 and Ja

Updates & announcements