Defense Boost

The Defense Boost is a feature of some buildings and items to increase the defense value of either the defensive units or the attacking units by a certain percentage. The defense boost can also be activated from the Friends Tavern by paying for it with Tavern Silver.

The defense boost for the attacking army is counted separately from the defending army. In both cases it only benefits the defense value. To increase the offensive stats of the attacking or defending army players may use the attack boost.

When having multiple defense boosts, either from buildings or from items, those percentages are stacked. Then the unit's base defense value is increased by the result.

Defense Boost Providers for Defending Army[]

The following sources increase the defense values of the players troops when they are used for defending. This applies for the City Defense when the player is attacked by another player of their neighborhood and when defending against another player in the PvP Arena.

Great Buildings[]

Some of the Great Buildings offer a Fierce Resistance or Advanced Tactics bonus, which beside increasing the defense value also increases the attack value of the defending units.

Building		Fierce Resistance and Advanced Tactics
	Deal Castle	Provides Fierce Resistance Provides +3% defense boost at level 1 and +30% defense boost at level 10. After level 10 +1% defense boost is gained after every second level.
	Saint Basil's Cathedral	Provides Fierce Resistance Provides +3% defense boost at level 1 and +30% defense boost at level 10. After level 10 +1% defense boost is gained after every second level.
	Terracotta Army	Provides Advanced Tactics Provides +2% defense boost at level 1 and +20% defense boost at level 10. After level 10 +1% defense boost is gained after every second level. What makes the Terracotta Army different is that the stats of the offensive army are also increased by the same amount.

Special Buildings[]

Building		Defense Boost
	The Appleton Cottage	Provides from +10% to +18% defense boost depending on the building's age. The Appleton Cottage is one of the three options when reaching level 7 with the September Cottage.
	Athlete Living Quarters	Provides +7% defense boost. The boost value remains constant through the ages.
	Athlon Abbey	Provides from 20% to 30% defense boost on the highest level depending on the building's age. In addition it also provides an attack boost for the defending army.
	Bear Mountain	Provides from 21% to 35% defense boost depending on the building's age. In addition it also provides an attack boost for the defending army.
	Classical Garden Pool	Provides +4% defense boost when adjacent to one other building from the Classical Garden Set. The boost values remain constant through the ages.
	Druid Willow	Provides +3% defense boost at level 1 or +6% at level 2, when adjacent to at least two other different buildings from the Celtic Forest Set.
	Elephant Fountain	Provides from +3% to +9% defense boost when adjacent to at least three other different buildings from the Indian Fountain Set. The boost value depends on the building's age.
	Festive Canal	Provides from 17% to 27% defense boost depending on the building's age.
	Garden Ruins	Provides +2% defense boost when adjacent to one other building from the Royal Garden Set or +5% defense boost when adjacent to two other different buildings from the set. The boost values remain constant through the ages.
	Monastery	Provides +20% defense boost.
	Nishikigoi Pond	Provides +2% defense boost when adjacent to two other different buildings from the Cherry Garden Set or +5% defense boost when adjacent to three other different buildings from the set. The boost values remain constant through the ages. At level 2 the Nishikigoi Pond provides +5% defense boost when adjacent to two other buildings from the set or +12% defense boost when adjacent to three.
	Pond of Fall	Provides from +6% to +12% defense boost depending on the building's age.
	Ritual Flame	Provides +8% defense boost at level 1. At level 2 +12% defense boost is provided. The boost value remains constant through the ages.
	Royal Guard Post	Provides +1% to +2% defense boost depending on the building's age.
	Smörgåsbord Feast	Provides +2% defense boost when adjacent to two other different buildings from the Winter Village Set or +5% defense boost when adjacent to three different buildings from the set. The boost values remain constant through the ages.
	Sundial Spire	Provides from +2% to +7% defense boost depending on the building's age.
	Tigers' Den	Provides +5% defense boost. The boost value remains constant through the ages.
	Terror Teacups	Provides +4% defense boost at level 1 or +8% at level 2, when adjacent to at least two other different buildings from the Horror Circus Set.
	Watchfire	Provides +4% defense boost at level 1. At level 2 +6% defense boost is provided. The boost values remain constant through the ages.
	Winter Spire	When upgraded to level 5 or more starts to provides +3% to +14% defense boost depending on the building's level and the age.
	Primrose Bloom	Provides +6% defense boost to the defending army.

Military Buildings[]

From the Contemporary Era and onward some of the regular military buildings also provide defense boost.

Building	Boost	Era
Air Defense Factory	+4%	Contemporary Era
Missile Site	+4%	Contemporary Era
Anti-Materiel Range	+4%	Tomorrow Era
Microwave Blaster Factory	+4%	Tomorrow Era
Satellite Uplink Center	+5%	Future Era
Rail Gun Range	+5%	Future Era
Battle Fortress Factory	+6%	Arctic Future
Plasma Range	+7%	Arctic Future
C.R.A.B. Lab	+6%	Oceanic Future
Turturret Dock	+7%	Oceanic Future
Warrior Monk School	+6%	Virtual Future

Items[]

Defender boost items can be gained from the boost crate, events, Daily Challenges and Incidents. Items can only provide temporary defense boost. The boost effect from the items do stack up, that means players may use multiple boost items at once.

Item		Defense Boost
	Small Defender Boost	Provides +10% defense boost for 8h.
	Medium Defender Boost	Provides +20% defense boost for 8h.
	Large Defender Boost	Provides +30% defense boost for 8h.

Friends Tavern[]

A temporary defense boost can be activated in the Friends Tavern with Tavern Silver.

Item	Cost	Defense Boost
	1,000	Activates +10% defense boost for 24h.
	2,500	Activates +20% defense boost for 48h.
	7,000	Activates +30% defense boost for 72h.

Defense Boost Providers for Attacking Army[]

The following sources increase the defense values of the players troops when they are used for attacking. This applies for attacking other players in the neighborhood, for attacking other players in the PvP Arena, for attacking in the guild expedition encounters, for attacking on the GvG Maps, for fights on the Continent Maps, for fights in the Daily Challenges or for fights in the Guild Battlegrounds.

Great Buildings[]

Some of the Great Buildings offer a Military Boost or Advanced Tactics bonus, which beside increasing the attack value also increases the defense value of the attacking units.

	Building	Military Boost and Advanced Tactics
	Castel del Monte	Provides Military Boost Provides +3% defense boost at level 1 and +30% defense boost at level 10. After level 10 +1% defense boost is gained after every second level.
	Cathedral of Aachen	Provides Military Boost Provides +3% defense boost at level 1 and +30% defense boost at level 10. After level 10 +1% defense boost is gained after every second level.
	Statue of Zeus	Provides Military Boost Provides +3% defense boost at level 1 and +30% defense boost at level 10. After level 10 +1% defense boost is gained after every second level.
	Terracotta Army	Provides Advanced Tactics Provides +2% defense boost at level 1 and +20% defense boost at level 10. After level 10 +1% defense boost is gained after every second level. What makes the Terracotta Army different is that the stats of the defending army are also increased by the same amount.

Special Buildings[]

	Building	Defense Boost
	Ancient Obelisk	Provides from +2% to +6% defense boost to the attacking army, depending on the building's level.
	Druid Temple	Provides from +14% to +28% attack boost on the highest level, depending on the building's age.
	Druid Willow	Provides +3% defense boost to the attacking army at level 1 or +6% at level 2, when adjacent to at least two other buildings from the Celtic Forest Set.
	Eagle Mountain	Provides from 19% to 30% defense boost to the attacking army depending on the building's age. In addition it also provides an attack boost for the attacking army.
	Festive Canal	Provides from 17% to 30% defense boost to the attacking army depending on the building's age.
	Gate of the Sun God	At level 2 it provides +4% defense boost to the attacking army.
	Hippodrome Carceres	Provides +8% to 18% defense boost to the attacking army at level 6, depending on the building's age.
	House of Horrors	Provides +2% to 7% defense boost to the attacking army at level 6 and +6% - 15% at level 7, depending on the building's age.
	Mystical Organ	Provides +2% defense boost to the attacking army at level 1 or +5% at level 2, when adjacent to at least three other buildings from the Horror Circus Set.
	Ochre Yard	Provides +8% defense boost to the attacking army.
	Olive Grove	Provides +8% defense boost to the attacking army when chained to a Terracotta Vineyard.
	Olympic Treasury	When upgraded to level 10 it provides +10% to +28% defense boost to the attacking army, depending on the building's age.
	Road to Victory	Provides +5% defense boost to the attacking army when chained to a Statue of Honor.
	Rousioi Track	Provides +3% defense boost to the Sphendone and Carceres, when chained to those.
	Sentinel Outpost	Provides from +2% to +4% defense boost to the attacking army, depending on the building's level.
	Sun Temple	Provides 30% defense boost on the highest level.
	Wonder Wheel	Provides +18% to 32% defense boost to the attacking army, depending on the building's age.