Editing Upgrades

'''[[File:Upgrades.png|thumb|168px]]Upgrades''' in [[Kingdom Rush]] are used to increase the power and effectiveness of towers and spells. There are six upgrade trees, one for each tower type and one for each spell. Each tree has a total of five upgrades.

==Stars==
Upgrades are bought with stars, which can be obtained in several ways:
* Completing a [[Campaign]] level gives stars based on the number of lives left:
** 18-20 lives: 3 stars
** 6-17 lives: 2 stars
** 1-5 lives: 1 star
* Completing a [[Heroic Challenge]] or [[Iron Challenge]] gives 1 star.

* Exclusive to the Flash version:
** Buying the [[Premium Content]] gives 15 stars.
** Clicking on the Twitter and Facebook buttons gives 1 star each.
* Trivia
** You need to get 65 (62 stars on Flash) stars to buy every upgrade on all six trees in the original Kingdom Rush, This is the same for Kingdom Rush: Frontiers.

==[[Kingdom Rush]]==

===[[:Category:Ranged Towers|Archer Tower]]===
{{Template:KR Archer Upgrade}}

===[[:Category:Melee Towers|Barracks]]===
{{Template:KR Barracks Upgrade}}

===[[:Category:Magic Towers|Magic Tower]]===
{{Template:KR Magic Tower Upgrade}}

===[[:Category:Artillery Towers|Artillery]]===
{{Template:KR Artillery Upgrade}}

===[[Rain of Fire]]===
{{Template:KR Rain of Fire Upgrade}}

===[[Call Reinforcements|Reinforcements]]===
{{Template:KR Call Reinforcements Upgrade}}

==Kingdom Rush Frontiers==

===[[:Category:Ranged Towers|Archer Tower]]===
{{Template:KRF Archer Upgrade}}

===[[:Category:Melee Towers|Barracks]]===
{{Template:KRF Barracks Upgrade}}

===[[:Category:Magic Towers|Magic Tower]]===
{{Template:KRF Magic Tower Upgrade}}

===[[:Category:Artillery Towers|Artillery]]===
{{Template:KRF Artillery Upgrade}}

===[[Rain of Fire]]===
{{Template:KRF Rain of Fire Upgrade}}

===[[Call Reinforcements|Reinforcements ]]===
{{Template:KRF Call Reinforcements Upgrade}}

==Kingdom Rush: Origins==

===[[:Category:Ranged Towers|Archer Tower]]===
{{Template:KRO Archer Upgrade}}

===[[:Category:Melee Towers|Barracks]]===
{{Template:KRO Barracks Upgrade}}

===[[:Category:Magic Towers|Magic Tower]]===
{{Template:KRO Magic Tower Upgrade}}

===[[:Category:Artillery Towers|Druid Tower]]===
{{Template:KRO Artillery Upgrade}}

===[[Thunderbolt]]===
{{Template:KRO Thunderbolt Upgrade}}

===[[Call Reinforcements|Reinforcements]]===
{{Template:KRO Call Reinforcement Upgrade}}

==[[Kingdom Rush: Vengeance]]==

===Upgrade Points===
Upgrades in [[Kingdom Rush: Vengeance]] are bought with '''Upgrade Points''' instead of Stars and are gained differently to previous games. Unlike in previous games, upgrade points are exclusively earned from [[Campaign]] mode; completing [[Heroic Challenge|Heroic]] and [[Iron Challenge]]s give no upgrade points. The number of upgrade points earned is independent of stars; no matter how many [[lives]] the player finishes the stage with, the number of upgrade points is always the same. Most stages grant three upgrade points upon completion, with the exception of the following:
* [[Kazan Mines]], [[Jokull's Nest]]: 4 upgrade points
* [[Otil Farmlands]]: 6 upgrade points
* [[Denas's Castle]]: 10 upgrade points

===[[:Category:Towers|Towers]]===
{{Template:KRV Towers Upgrade}}

===[[:Category:Heroes|Heroes]]===
{{Template:KRV Hero Upgrade}}

===[[Call Reinforcements|Demon Goonies]]===
{{Template:KRV Demon Goonies Upgrade}}

===[[Soul Impact]]===
{{Template:KRV Soul Impact Upgrade}}

==See Also==

[[Upgrade strategy|Upgrade Strategy]]
[[Category:Game Mechanics]]