This is not a perfect list of all publishers and their top games. While I took from the top 300 wargames on BGG, I also ignored publishers with one-off games, fantasy wargames, and older companies like Avalon Hill, Jolly Green Games, & SPI that are no longer in business, or under new ownership.
I also stopped listing "top games" after ten. If you look on BGG, it's clear that GMT & MMP dominates the entire list.
- GMT
- Twilight Struggle (2005)
- Paths of Glory (1999)
- Sekigahara (2011)
- Triumph & Tragedy (2015)
- Empire of the Sun (2005)
- Here I Stand (2006)
- Combat Commander (2006)
- Imperial Struggle (2020)
- Fire in the Lake (2014)
- Commands & Colors: Napoleonics (2010)
- Decision Games
- D-Day at Omaha Beach (2009)
- RAF: The Battle of Britain 1940 (2009)
- D-Day at Tarawa (2014)
- Axis Empires: Totaler Krieg! (2011)
- D-Day at Peleliu (2015)
- Histogame
- Maria (2012)
- Napoleon's Triumph (2007)
- Friedrich (2004)
- Bonaparte at Marengo (2005)
- Multiman Publishing
- Advanced Squad Leader (1985)
- A Victory Lost: Crisis in Ukraine 1942-1943 (2006)
- Angola (1988)
- The Devil's Cauldron: The Battles for Arnhem and Nijmegen (2008)
- Stonewall Jackson's Way II: Battles of Bull Run (2013)
- Roads to Gettysburg II: Lee Strikes North (2018)
- Warriors of God: The Wars of England & France, 1135-1453 (2008)
- Last Blitzkrieg: Wacht am Rhein, The Battle of the Bulge (2016)
- Korea: The Forgotten War (2003)
- Case Blue (2007)
- DAK2: The Campaign in North Africa, 1940-1942 (2004)
- Phalanx
- Hannibal: Rome vs. Carthage (1996)
- Revolution: The Dutch Revolt 1568-1648 (2004)
- 1944: Race to the Rhine (2014)
- Compass Games
- Enemy Action: Ardennes (2015)
- Crusade and Revolution: The Spanish Civil War, 1936-1939 (2013)
- The Russian Campaign (1974)
- Brotherhood & Unity (2020)
- The Third World War (1984)
- Europe in Turmoil: Prelude to the Great War (2018)
- Silent War (2005)
- Academy Games
- Conflict of Heroes: Awakening the Bear! (2012)
- 1775: Rebellion (2013)
- Conflict of Heroes: Storms of Steel! – Kursk 1943 (2009)
- 878 Vikings: Invasions of England (2017)
- 1754: Conquest – The French and Indian War (2017)
- 1812: The Invasion of Canada (2012)
- Strike of the Eagle (2011)
- Osprey Games
- Undaunted: Normandy (2019)
- Undaunted: North Africa (2020)
- DVG
- Thunderbolt Apache Leader (2012)
- Pavlov's House (2018)
- Hornet Leader: Carrier Air Operations (2010)
- Field Commander: Napoleon (2011)
- Warfighter: The Tactical Special Forces Card Game (2014)
- Phantom Leader Deluxe (2013)
- B-17 Flying Fortress Leader (2017)
- Castle Itter: The Strangest Battle of WWII (2019)
- Columbia Games
- Julius Caesar: Caesar, Pompey, and the Roman Civil War (2010)
- Hammer of the Scots (2002)
- EastFront: The War in Russia 1941-45 (2006)
- Rommel in the Desert (1982)
- Richard III: The Wars of the Roses (2009)
- Crusader Rex (2005)
- Hexasim
- Liberty Roads (2009)
- Great War Commander (2018)
- Austerlitz 1805: Rising Eagles (2016)
- Worthington Publishing
- Band of Brothers: Screaming Eagles (2011)
- Band of Brothers: Ghost Panzer (2013)
- Lock N Load Publishing
- World At War 85: Storming the Gap (2019)
- Lock 'n Load: Band of Heroes (2005)
- Legion Wargames
- Dien Bien Phu: The Final Gamble (2014)
- Target for Today (2017)
- Fort Circle Games
- The Shores of Tripoli (2020)
- Fellowship Of Simulations
- Verdun 1916: Steel Inferno (2020)
- Clash of Arms
- Close Action: The Age of Fighting Sail Vol. 1 (1997)
- La Bataille des Quatre Bras (1991)
- Triumph of Chaos (2005)
- Revolution Games
- Celles: The Ardennes, December 23-27, 1944 (2012)
- Longstreet Attacks: The Second Day at Gettysburg (2018)
- Königsberg: The Soviet Attack on East Prussia, 1945 (2018)
- Nuts! Publishing
- 300: Earth & Water (2018)
Publishers Not in the Top 300 BGG Wargames
- VUCA Simulations
- Crossing the Line: Aachen 1944 (2019) - 493
- The Great Crisis of Frederick II (2020) - 908
- Across the Bug River: Volodymyr-Volynskyi 1941 (2021) - 903
- Hollandspiele
- Table Battles (2017) - 600
- Agricola, Master of Britain (2016) - 607
- The Wars of Marcus Aurelius (2018) - 608
- Meltwater: A Game of Tactical Starvation (2018) - 662
- White Dog Games
- The Mission: Early Christianity from the Crucifixion to the Crusades (2020) - 348
- Mrs Thatcher's War: The Falklands, 1982 (2017) - 488
- The White Tribe: Rhodesia's War 1966-1980 (2018) - 577
- Vae Victis
- Aspern-Essling 1809 (2009) - 936
- Fuentes de Onoro 1811 (2011) - 900
- Au fil de l'épée (2002) - 1161
- Avalanche Press
- Eastern Front: A Panzer Grenadier Game (2005) - 698
- Great War at Sea: The Mediterranean (1996) - 919
- Second World War at Sea: Bomb Alley (2002) - 732
- Flying Pig Games
- Old School Tactical: Volume 1 – Fighting on the Eastern Front 1941/42 (2016) - 346
- Old School Tactical: Volume 2 – West Front 1944/45 (2017) - 416
- '65: Squad-Level Combat in the Jungles of Vietnam (2016) - 644
- Tiny Battle Publishing
- Invaders from Dimension X! (2015) - 1455
- Attack of the 50 Foot Colossi! (2018) - 1663
- Rifles in the Ardennes (2017) - 1682
- Shako Games
- Napoléon 1806 (2017) - 390
- Napoleon 1807 (2020) - 434
- Saladin (2022) - 931
- Operational Studies Group
- Napoleon at Leipzig (1979) - 467
- Napoleon at Bay: The Campaign in France, 1814 (1978) - 762
- Napoleon's Last Gamble: Battles of the Hundred Days (2016) - 510
- Thin Red Line Games
- 1985: Under an Iron Sky (2018) - 676
- Less Than 60 Miles (2019) - 865
- The Dogs of War (2021) - 1217
- New England Simulations
- The Jaws of Victory: Battle of Korsun-Cherkassy Pocket – January/February 1944 (2020) - 549
- The Killing Ground (2002) - 661
- Napoleon on the Danube (1992) - 1417
- Turning Point Simulations
- Pacific Rim Publishing
- Iron Tide: Panzers in the Ardennes (2003) - 795
- Minden Games
- Red Sash Games
