92		Warhammer 40,000: Sanctus Reach (Windows, 2017)
83		Operation: New Earth (Windows, 2016)
74		Legions of Steel (Windows, 2015)
70		Space Crusade (DOS, 1992)
62		Stone Age Wars (Windows, 2017)
62		Hold the Line: The American Revolution (Windows, 2017)
61		Mech Commander (Windows, 1998)
60		Tridonis (Windows, 1998)
60		Warhammer 40,000: Chaos Gate (Windows, 1998)
60		Final Liberation: Warhammer Epic 40,000 (Windows, 1997)
57		Xenonauts (Windows, 2014)
56		Battle Worlds: Kronos (Windows, 2013)
54		Pike and Shot: Campaigns (Windows, 2015)
53		X-COM: UFO Defense (Windows, 2007)
53		X-COM: UFO Defense (DOS, 1994)
52		X-COM: Apocalypse (DOS, 1997)
52		X-COM: Apocalypse (Windows, 1997)
51		Call to Power II (Windows, 2000)
51		I'm Not a Monster (Windows, 2018)
50		UFO: Extraterrestrials (Windows, 2007)
50		Urban Legend (Windows, 2007)
50		Star Trek: Away Team (Windows, 2001)
50		Laser Squad: Nemesis (Windows, 2005)
47		1953: NATO vs Warsaw Pact (Windows, 2014)
46		Space Hulk: Ascension (Windows, 2014)
45		Civil War: 1862 (Windows, 2016)
45		Civil War: 1863 (Windows, 2016)
44		Civil War: 1861 (Windows, 2017)
44		Space Hulk (Windows, 2013)
44		Into the Breach (Windows, 2018)
44		Heroes of Normandie (Windows, 2015)
44		Decisive Campaigns: Case Blue (Windows, 2015)
44		Warhammer 40,000: Regicide (Windows, 2015)
43		Tank Battle: Blitzkrieg (Windows, 2016)
43		1775: Rebellion (Windows, 2016)
43		Assault on Arnhem (Windows, 2016)
43		Tank Battle: 1944 (Windows, 2016)
43		Tank Battle: North Africa (Windows, 2016)
42		Afghanistan '11 (Windows, 2017)
42		Commands & Colors: The Great War (Windows, 2017)
42		Warhammer 40,000: Space Wolf (Windows, 2017)
42		Siegecraft Commander (Windows, 2017)
42		X-COM: Terror from the Deep (DOS, 1995)
42		Tank Battle: East Front (Windows, 2017)
42		Tank Battle: 1945 (Windows, 2017)
42		Warhammer 40,000: Mechanicus (Windows, 2018)
42		X-COM: Terror from the Deep (Windows, 2007)
41		Space Hulk: Tactics (Windows, 2018)
41		Warhammer 40,000: Gladius - Relics of War (Windows, 2018)
41		Warlords: Battlecry (Windows, 2000)
41		Warlords: Battlecry II (Windows, 2002)
41		Warlords (DOS, 1990)
40		Harukaze Sentai V-Force (Windows, 1997)
40		Warlords: Battlecry III (Windows, 2004)
40		Warlords IV: Heroes of Etheria (Windows, 2003)
40		Generals of War (Windows, 2003)
40		Shadow Watch (Windows, 2000)
40		Time Generals: Das Risiko der Zukunft (Windows, 2007)
40		Panzer Command: Operation Winter Storm (Windows, 2006)
40		War of Conquest (Windows, 2002)

Notes: Games similar to Warhammer 40,000: Armageddon, Games like Warhammer 40,000: Armageddon, Flashback Game Studio, The Lordz Games Studio, Slitherine Ltd., Windows, Strategy, Tactics, Sci-Fi, Futuristic, Wargame, Turn-based, Bird's-eye view, Isometric, Warhammer 40, 000, PC, Game Similarities.