Comparison between Civilization games

The Civilization series contains several games with many features in common. This is a brief comparison of some of the features.
This table includes MicroProse/Firaxis games in the Civilization franchise, excluding games from other franchises (Colonization, Sid Meier's Alpha Centauri) and games from other publishers (Civilization: Call to Power, C-evo), among others.
" in a column for an expansion pack, means that it adds nothing to the category.
Game 	Civ I 	Civ II 	Civ III 	Civ III: PTW 	Civ III: Conquests 	Civ IV 	Civ IV: Warlords 	Civ IV: BTS 	CivRev 	Civ V 	Civ V: G&K 	Civ V: BNW 	Civ VI 	Civ VI: R&F 	Civ VI: GS 	Civ VI: New Frontier Pass 	Civ VI: Leader Pass 	Civ VII
Release year 	1991 	1996 	2001 	2002 	2003 	2005 	2006 	2007 	2008 	2010 	2012 	2013 	2016 	2018 	2019 	2021 	2023 	2025
# difficulty levels 	5 	6 (introducing Deity) 	6 	6 	8 (introducing Demigod and Sid) 	9 (introducing Settler, Noble and Immortal) 	9 	" 	5 	8 	" 	" 	8 	" 	" 	" 	" 	
# civs 	14 	21 	18 	26 	34 	18 	24 	34 	16 	18 (+7 with DLC) 	34 	43 	19 (+7 with DLC) 	34 	42 	50 	" 	
# leaders 	14 	42 	18 	26 	34 	26 	36 	52 	16 	18 (+7 with DLC) 	34 	43 	19 (+9 with DLC) 	37 	46 	55 leaders;3 personas 	67 leaders;9 personas	
# Wonders of the World 	21 	28 	24 	? 	? 	30 	33 	41 	21 	28 (+3 with DLC) 	37 	47 	30 (+4 with DLC) 	42 	49 	53 	" 	
# Small/ National Wonders 	None 	None 	10 	? 	? 	13 	13 	14 	0 	8 	10 	11 	None 	" 	" 	" 	" 	
Government types 	5 	6 (introducing Fundamentalism)	5 	" 	7 (introducing Feudalism and Fascism)	5*5 Civics 	" 	" 	6 	10*6 Social policies 	" 	9*6 Social policies, 3*16 Ideology tenets 	10 	" 	13 	" 	" 	
# techs 	67 	89 	82 	82 	84 	86 	86 	92 	47 	74 	80 	81 	68 techs & 50 civics 	" 	77 techs & 60 civics 	" 	" 	
Religion 	Generic religious buildings	Generic religious buildings 	Generic religious buildings 	" 	" 	Multiple identical 	" 	" 	Generic religious buildings 	Generic religious buildings 	and Pantheons and Beliefs 	and Reformation Beliefs 	Generic religious buildings, pantheons, beliefs, theological combat and Religious victory 	" 	" 	" 	" 	
Espionage 	Diplomats 	Diplomats and Spies 	Spies 	" 	" 	Spies 	" 	Espionage points, Spy specialist	Spies 	No 	Espionage 	Espionage, including Diplomats 	Espionage, Diplomatic Visibility 	" 	" 	" 	" 	
Map grid 	Square 	Isometric square 	Isometric square 	" 	" 	Square (3D) 	" 	" 	Square (3D) 	Hexagonal (3D) 	" 	" 	Hexagonal (3D) 	" 	" 	" 	" 	
Resources 	Bonus only 	Bonus only 	Bonus, 8 Strategic & 8 Luxury 	" 	" 	11 Food, 9 Strategic & 15 Luxury 	" 	" 	Bonus only 	Bonus, 6 Strategic & 15 Luxury 	and 7 new Luxury resources 	and 3 new Luxury resources from Indonesia 	10 Bonus, 7 Strategic & 30 Luxury 	and 3 new Luxury resources	" 	and 1 new Luxury resource and 1 new Bonus resource	" 	
Unique civilization features	None 	City graphics only 	Unique units, civilization strengths 	" 	" 	Unique units, Leader traits 	and Unique buildings	" 	Era-specific abilities 	Unique units, Unique buildings & Unique abilities (and Unique improvements with DLC) 	and Unique improvements 	" 	Unique units, Unique buildings, Unique districts and Unique abilities (leader and civilization)	" 	" 	" 	" 	
Great People 	None 	None 	Great leader 	" 	" 	Artist, Engineer, Merchant, Prophet & Scientist	and Great General 	and Great Spy 	Artist/Thinker, Builder, Explorer/Industrialist, Leader & Scientist	Artist, Engineer, General, Merchant & Scientist (and the unique Khan for Mongolia)	and Great Prophet and Admiral 	and Great Musician, Great Writer and the unique Merchant of Venice for Venice	Artist, Admiral, Engineer, General, Merchant, Musician, Prophet, Scientist & Writer 	" 	" 	Comandante General 	" 	
Hit points 	None 	By unit statistics 	By unit experience 	" 	" 	By unit strength 	" 	" 	" 	By unit strength 	" 	" 	By unit strength 	" 	" 	" 	" 	
Included scenarios 	None 	Rome & World War II 	None 	None 	9 	3 	8 (11 in total) 	12 (23 in total) 	None 	None (+6 with DLC) 	3 (9 in total) 	2 (11 in total) 	6 (+6 with DLC) 	" 	2 (14 in total) 	" 	" 	
Other new features 	 	Reputation 	Culture, Borders, War weariness, Air missions, Forced labor	Multiplayer, New game modes	" 	Health, Cottages 	Vassals 	" 	Relics 	City-States, Happiness, Embarking, Puppets 	Mercantile and Religious City-States	International trade routes, Tourism, World Congress 	Districts, Civic Tree, Policy Cards  	Governors, Loyalty, Ages 	Climate, Power, World Congress, Grievances	Leader personas 	" 	
 
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