Speed (Civ4)

Speed is a game setting in Civilization IV that modifies the general costs and "scales" of all actions in the game, including the number of turns. It is represented as "Game Speed" on the Game Setup menu.
Generally speaking, Quick games have all their turn costs and research times 66% of their normal value (everything is a third faster), Normal games have 100% of their normal value, Epic games have everything at 150% their normal value (takes one and a half as long), and Marathon games are 300% their normal value (it takes 3 times as long). There are some minor exceptions. In practice, slower game modes mean: cities grow much more slowly, build times are much slower, and Workers will take much longer to build tile improvements, but units retain their normal movement speed.
== Total Game Turns ==
In vanilla Civilization IV and Warlords, there are fewer turns because the game cannot support a turn interval of less than a year. This was fixed in Beyond the Sword.
* Quick: 330 turns (320 in vanilla)
* Normal: 500 turns (460 in vanilla)
* Epic: 750 turns (660 in vanilla)
* Marathon: 1500 turns (1200 in vanilla)
=== Turns and year ===
The year progresses in 6 to 8 iterations. When starting in the Ancient Era the game starts in 4000 BC and ends in 2050 AD. Below is a table showing the iterations of year progression at different game speeds.
==== Vanilla and Warlords ====
Iteration	Iteration 	1 	2 	3 	4 	5 	6 	7 	8
Quick
speed	Years per turn	60 	35 	30 	15 	10 	5 	2 	1
Quick
speed	Turns 	50 	30 	30 	25 	30 	55 	50 	50
Quick
speed	Years span 	3000 	1050 	900 	375 	300 	275 	100 	50
Quick
speed	Start year 	4000 BC	1000 BC	50 AD 	950 AD 	1325 AD	1625 AD	1900 AD	2000 AD
Quick
speed	End year 	1000 BC	50 AD 	950 AD 	1325 AD	1625 AD	1900 AD	2000 AD	2050 AD
Normal
speed	Years per turn	40 	25 	20 	10 	5 	2 	1 	
Normal
speed	Turns 	75 	60 	25 	50 	60 	60 	130 	
Normal
speed	Years span 	3000 	1500 	500 	500 	300 	120 	130 	
Normal
speed	Start year 	4000 BC	1000 BC	500 AD 	1000 AD	1500 AD	1800 AD	1920 AD	
Normal
speed	End year 	1000 BC	500 AD 	1000 AD	1500 AD	1800 AD	1920 AD	2050 AD	
Epic
speed	Years per turn	30 	15 	6 	3 	2 	1 	 	
Epic
speed	Turns 	100 	140 	70 	70 	40 	240 	 	
Epic
speed	Years span 	3000 	2100 	420 	210 	80 	240 	 	
Epic
speed	Start year 	4000 BC	1000 BC	1100 AD	1520 AD	1730 AD	1810 AD	 	
Epic
speed	End year 	1000 BC	1100 AD	1520 AD	1730 AD	1810 AD	2050 AD	 	
Marathon
speed	Years per turn	15 	10 	8 	5 	2 	1 	 	
Marathon
speed	Turns 	200 	150 	40 	90 	60 	660 	 	
Marathon
speed	Years span 	3000 	1500 	320 	450 	120 	660 	 	
Marathon
speed	Start year 	4000 BC	1000 BC	500 AD 	820 AD 	1270 AD	1390 AD	 	
Marathon
speed	End year 	1000 BC	500 AD 	820 AD 	1270 AD	1390 AD	2050 AD	 	
==== Beyond the Sword ====
Iteration	Iteration 	1 	2 	3 	4 	5 	6 	7 	8
Quick
speed	Years per turn	60 	40 	30 	20 	10 	5 	2 	1
Quick
speed	Turns 	50 	30 	20 	30 	25 	40 	65 	70
Quick
speed	Years span 	3000 	1200 	600 	600 	250 	200 	130 	70
Quick
speed	Start year 	4000 BC	1000 BC	200 AD 	800 AD 	1400 AD	1650 AD	1850 AD	1980 AD
Quick
speed	End year 	1000 BC	200 AD 	800 AD 	1400 AD	1650 AD	1850 AD	1980 AD	2050 AD
Normal
speed	Years per turn	40 	25 	20 	10 	5 	2 	1 	1/2
Normal
speed	Turns 	75 	60 	25 	50 	60 	50 	120 	60
Normal
speed	Years span 	3000 	1500 	500 	500 	300 	100 	120 	30
Normal
speed	Start year 	4000 BC	1000 BC	500 AD 	1000 AD	1500 AD	1800 AD	1900 AD	2020 AD
Normal
speed	End year 	1000 BC	500 AD 	1000 AD	1500 AD	1800 AD	1900 AD	2020 AD	2050 AD
Epic
speed	Years per turn	25 	15 	10 	5 	2 	1 	1/2 	
Epic
speed	Turns 	140 	90 	40 	90 	70 	100 	220 	
Epic
speed	Years span 	3500 	1350 	400 	450 	140 	100 	110 	
Epic
speed	Start year 	4000 BC	500 BC 	850 AD 	1250 AD	1700 AD	1840 AD	1940 AD	
Epic
speed	End year 	500 BC 	850 AD 	1250 AD	1700 AD	1840 AD	1940 AD	2050 AD	
Marathon
speed	Years per turn	15 	10 	5 	2 	1 	1/2 	1/4 	1/12
Marathon
speed	Turns 	100 	300 	170 	201 	129 	180 	264 	156
Marathon
speed	Years span 	1500 	3000 	850 	402 	129 	90 	66 	13
Marathon
speed	Start year 	4000 BC	2500 BC	500 AD 	1350 AD	1752 AD	1881 AD	1971 AD	2037 AD
Marathon
speed	End year 	2500 BC	500 AD 	1350 AD	1752 AD	1881 AD	1971 AD	2037 AD	2050 AD
== Building Costs ==
* Quick: 67% normal hammer costs
* Normal: 100% normal hammer costs
* Epic: 150% normal hammer costs
* Marathon: 300% normal hammer costs
== Tech Costs ==
* Quick: 67% normal tech cost
* Normal: 100% normal tech cost
* Epic: 150% normal tech cost
* Marathon: 300% normal tech cost
== Unit Costs ==
* Quick: 67% normal hammer costs
* Normal: 100% normal hammer costs
* Epic: 150% normal hammer costs
* Marathon: 240% normal hammer costs
== Culture Requirements ==
* Quick: 50% Culture requirements
* Normal: 100% Culture requirements
* Epic: 150% Culture requirements
* Marathon: 300% Culture requirements
== Wood Chops and Whips ==
All chops and whips are multiplied in line with the factors above. A woodchop will provide 3x as much wood on Marathon as it does normally.
== See also ==
* Speed in other games
Category:Game concepts (Civ4)