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{{EnemyInfobox
{{Infobox
 
|name=Boss Stem Cell
+
| name = Boss Stem Cell
|image=Boss Stem Cell.png
+
| image = Boss Stem Cell Icon.png
|size=74x74
+
| size = 74px
|location=[[The Hand of the King]], [[The Giant]] (only for fifth Boss Stem Cell)
+
| location = [[The Hand of the King]], [[The Giant]] (only for the 5th Cell)
 
}}
 
}}
   
'''Boss Stem Cells''' (or simply '''Boss Cells''') are permanent items that increase the difficulty of the game when active. The first one is acquired by beating the [[The Hand of the King|Hand of the King]] with no Boss Stem Cells active, the second by beating him with one active, and so on. However, the fifth Boss Stem Cell is obtained by beating the [[Giant]] with four active.
+
'''Boss Stem Cells''' (or simply '''Boss Cells''') are permanent items that increase the difficulty of the game when active. The first one is acquired by beating the [[Hand of the King]] with no Boss Stem Cells active, the second by beating him with one active, and so on. However, the fifth Boss Stem Cell is obtained by beating the [[Giant]] with four active.
   
Boss Stem Cells can be injected and removed at the start of the game in the Tube. Each one makes the game significantly harder by increasing enemy tier, density, variety, and limiting healing options. On the other hand, higher difficulty levels also increase cells dropped from enemies and the level of the [[Legendary Forge]], and allow access to new blueprints and bonus doors scattered through the levels, as well as some ones dropped by enemies exclusive to high BSCs. The doors show the number of Boss Stem Cells required to enter and shine blue if enough are currently active. The fifth Boss Cell is special in that it doesn't modify anything compared to the fourth until the [[Throne Room]], where it grants access to a secret biome, the [[Astrolab]], and the hidden final boss of the game in the [[Observatory]].
+
Boss Stem Cells can be injected and removed at the start of the game in the Tube. Each one makes the game significantly harder by increasing enemy tier, density, variety, and limiting healing options. On the other hand, higher difficulty levels also increase cells dropped from enemies and the level of the [[Legendary Forge]], and allow access to new blueprints and bonus doors scattered through the levels, as well as some that are dropped by enemies exclusive to high BSCs. The doors show the number of Boss Stem Cells required to enter and shine blue if enough are currently active.
   
== Modifiers==
+
== Modifiers ==
 
{| class="wikitable"
 
{| class="wikitable"
 
!# of Boss Stem Cells
 
!# of Boss Stem Cells
 
!Modifiers
 
!Modifiers
 
|-
 
|-
|[[File:Boss Stem Cell.png|center]]
+
|[[File:Boss Stem Cell Icon.png|center|link=]]
| - [[File:BSC 1.png]] Hard difficulty
+
| - [[File:BSC 1.png|link=]] Hard difficulty
- [[File:Broken flask 3.png]] Reduce number of health fountains (only available every other level); transition areas without health fountains will instead give a mini recharge that will refill one use of health flask
+
- [[File:Broken flask 3.png|link=]] Health fountains are only available every other level and [[Passage]]s without them will instead give a flask recharge. Extra ones can also be purchased from food shops.
   
+ [[File:Advanced Forge Icon.png|22px]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of + and ++ items up to 100%
+
+ [[File:Advanced Forge Icon.png|22px|link=]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of + and ++ items up to 100%
   
 
+ Unlocks a door in [[Prison Depths]] that goes to the [[Ancient Sewers]]
 
+ Unlocks a door in [[Prison Depths]] that goes to the [[Ancient Sewers]]
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+ Bosses skip their first phase
 
+ Bosses skip their first phase
 
|-
 
|-
|[[File:2 Boss Cells.png|center]]
+
|[[File:2 Boss Cells.png|center|link=]]
| - [[File:BSC 2.png]] Very Hard difficulty
+
| - [[File:BSC 2.png|link=]] Very Hard difficulty
- [[File:Broken flask 4.png]] Removes all health fountains and flask recharges within transition areas. A single flask recharge is dropped after the first boss and before the second. They can still be purchased from food shops.
+
- [[File:Broken flask 4.png|link=]] Removes all health fountains, but gives one flask recharge within [[Passage]]s. Extra ones can also be purchased from food shops.
   
+ [[File:Advanced Forge Icon.png|22px]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 25%
+
+ [[File:Advanced Forge Icon.png|22px|link=]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 25%
   
+ [[File:Cell multiplier 1.png]] Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)
+
+ [[File:Cell multiplier 1.png|link=]] Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)
   
 
+ Unlocks a door in [[Slumbering Sanctuary]] that goes to the [[Cavern]]
 
+ Unlocks a door in [[Slumbering Sanctuary]] that goes to the [[Cavern]]
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+ Bosses skip their first phase
 
+ Bosses skip their first phase
 
|-
 
|-
|[[File:3 Boss Cells.png|center]]
+
|[[File:3 Boss Cells.png|center|link=]]
| - [[File:BSC 3.png]] Expert difficulty
+
| - [[File:BSC 3.png|link=]] Expert difficulty
- [[File:Broken flask 4.png]] Flask recharges are only obtained from food shops.
+
- [[File:Broken flask 4.png|link=]] Free flask recharges now only appear after the first boss and before the second. Extra ones can also be purchased from food shops.
   
+ [[File:Advanced Forge Icon.png|22px]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 50%
+
+ [[File:Advanced Forge Icon.png|22px|link=]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 50%
   
+ [[File:Cell multiplier 2.png]] Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)
+
+ [[File:Cell multiplier 2.png|link=]] Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)
   
+ [[File:Scroll Fragments.png|22px]] Allows you to collect [[Scroll Fragment]]s
+
+ [[File:Scroll Fragments.png|22px|link=]] Allows you to collect [[Scroll Fragment]]s
   
+ [[File:EpicPower.png|22px]] [[Gear#Legendary_Items|Legendary items]] and [[Gear#Colorless_Items|colorless items]] are improved.
+
+ [[File:EpicPower.png|22px|link=]] [[Gear#Legendary Items|Legendary items]] and [[Gear#Colorless Items|colorless items]] are improved (Adds +3 to gear power of Legendary items).
   
 
+ Unlocks a door in [[Ramparts]] that goes to the [[Insufferable Crypt]]
 
+ Unlocks a door in [[Ramparts]] that goes to the [[Insufferable Crypt]]
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+ Bosses skip their first phase
 
+ Bosses skip their first phase
 
|-
 
|-
|[[File:4 Boss Cells.png|center]]
+
|[[File:4 Boss Cells.png|center|link=]]
| - [[File:BSC 4.png]] Nightmare difficulty
+
| - [[File:BSC 4.png|link=]] Nightmare difficulty
- Increases detection range of mobs and gives most of them the ability to teleport next to your position.
+
+Increases detection range of mobs and gives most of them the ability to teleport next to your position.
   
- [[File:Broken flask 4.png]] Flask recharges are only obtained from food shops.
+
- [[File:Broken flask 4.png|link=]] Extra flask recharges can only be purchased from food shops.
   
  +
+ [[File:Advanced Forge Icon.png|22px|link=]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 100%
+ [[File:Malaise.png]] Enemies have the malaise and a lot of the food is infected.
 
   
 
+ [[File:Cell multiplier 3.png|link=]] Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)
- Taking hits always causes [[Malaise]]
 
   
 
+ [[File:Scroll Fragments.png|22px|link=]] Allows you to collect more [[Scroll Fragment]]s
- Infected food can spawn, which grants you +1 [[Malaise]] when consumed. Uninfected food heals 1 malaise.
 
   
+ [[File:Advanced Forge Icon.png|22px]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 100%
+
+ [[File:EpicPower.png|22px|link=]] [[Gear#Legendary Items|Legendary items]] and [[Gear#Colorless Items|colorless items]] are improved.
 
+ [[File:Cell multiplier 3.png]] Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)
 
 
+ [[File:Scroll Fragments.png|22px]] Allows you to collect more [[Scroll Fragment]]s
 
 
+ [[File:EpicPower.png|22px]] [[Gear#Legendary_Items|Legendary items]] and [[Gear#Colorless_Items|colorless items]] are improved.
 
   
 
+ Allows you to collect the next Boss Stem Cell from [[The Giant]]
 
+ Allows you to collect the next Boss Stem Cell from [[The Giant]]
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+ Bosses skip their first phase
 
+ Bosses skip their first phase
 
|-
 
|-
|[[File:5 Boss Cells.png|center]]
+
|[[File:5 Boss Cells.png|center|link=]]
| - [[File:BSC 5.png]] Hell difficulty
+
| - [[File:BSC 5.png|link=]] Hell difficulty
 
- Increases detection range of mobs and gives most of them the ability to teleport next to your position.
 
- Increases detection range of mobs and gives most of them the ability to teleport next to your position.
   
- [[File:Broken flask 4.png]] Flask recharges are only obtained from food shops.
+
- [[File:Broken flask 4.png|link=]] Extra flask recharges can only be purchased from food shops.
   
+ [[File:Malaise.png]] Enemies have the malaise and a lot of the food is infected.
+
+ [[File:Malaise Icon.png|link=]] Malaise is activated.
   
  +
''See the [[Malaise|main article]] for information about malaise.''
- Taking hits always causes [[Malaise]]
 
   
  +
+ [[File:Advanced Forge Icon.png|22px|link=]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 100%
- Infected food can spawn, which grants you +1 [[Malaise]] when consumed. Uninfected food heals 1 malaise.
 
   
+ [[File:Advanced Forge Icon.png|22px]] Improves the level of the [[Gear#Gear Upgrades|Legendary Forge]] by allowing you to increase the frequency of S items up to 100%
+
+ [[File:Cell multiplier 3.png|link=]] Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)
   
 
+ [[File:Scroll Fragments.png|22px|link=]] Allows you to collect more [[Scroll Fragment]]s
+ [[File:Cell multiplier 3.png]] Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)
 
   
 
+ [[File:EpicPower.png|22px|link=]] [[Gear#Legendary Items|Legendary items]] and [[Gear#Colorless Items|colorless items]] are improved.
+ [[File:Scroll Fragments.png|22px]] Allows you to collect more [[Scroll Fragment]]s
 
 
+ [[File:EpicPower.png|22px]] [[Gear#Legendary_Items|Legendary items]] and [[Gear#Colorless_Items|colorless items]] are improved.
 
   
 
+ Gives access to the [[Astrolab]] and the [[Observatory]] (Rise of the Giant DLC content). Entrance to The Astrolab is located at the end of Throne Room.
 
+ Gives access to the [[Astrolab]] and the [[Observatory]] (Rise of the Giant DLC content). Entrance to The Astrolab is located at the end of Throne Room.
   
 
+ Bosses skip their first phase
 
+ Bosses skip their first phase
  +
  +
+ [[The Collector's Intern]] replaces the Collector in [[Passage]]s.
 
|-
 
|-
 
|}
 
|}
   
== Doors ==
+
== Trivia ==
 
* When Boss Stem Cells, then named ''Boss Runes'', were added in the ''v0.5.3'' patch of the Foundry Update, they could all be obtained on 0 BSC difficulty and each was dropped by a different boss.
  +
 
== History ==
  +
{{History|0.5|Introduced.}}
  +
{{History|1.2|Introduced 5 BSC difficulty.}}
  +
{{History|1.9
  +
|Removed Legendary item improvements from 3+ BSC that added one stat of each color.
  +
* Does not apply to the [[Hunter's Grenade]].
  +
}}
  +
{{History|2.3
  +
|Adjusted BSC difficulty curve:
  +
* 2 BSC now grants a flask recharge in every Passage.
  +
* 3 BSC now grants a flask recharge before the first boss and after the second boss.
  +
* 4 BSC no longer has the [[Malaise]] mechanic.
  +
}}
  +
  +
== Gallery ==
 
<gallery>
 
<gallery>
 
File:Door 1 Boss Cell Closed.png|Closed Door<br />1 Boss Cell
 
File:Door 1 Boss Cell Closed.png|Closed Door<br />1 Boss Cell
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</gallery>
 
</gallery>
   
 
{{Nav}}
== Notes ==
 
* Until ''v1.9'', at 3+ BSC, Legendary items gave +1 to all Stats. This now only applies to the [[Hunter's Grenade]].
 
* Until ''v1.2'', the fifth boss cell was unobtainable (unless with third party tools), and a 5 BSC door in the Graveyard would grant access to the unfinished level [[Biomes#Repository_of_the_Architects|Repository of the Architects]].
 
*When boss cells, or then named boss runes, were added In the v0.5.3 patch of the foundry update they could all be obtained on the 0 BSC difficulty and each was dropped by a different boss.
 
   
<br />
 
 
[[Category:Dead Cells]]
 
[[Category:Dead Cells]]
  +
[[Category:Update 0.5]]
 
{{Nav}}
 

Revision as of 16:53, 6 June 2021

Boss Stem Cells (or simply Boss Cells) are permanent items that increase the difficulty of the game when active. The first one is acquired by beating the Hand of the King with no Boss Stem Cells active, the second by beating him with one active, and so on. However, the fifth Boss Stem Cell is obtained by beating the Giant with four active.

Boss Stem Cells can be injected and removed at the start of the game in the Tube. Each one makes the game significantly harder by increasing enemy tier, density, variety, and limiting healing options. On the other hand, higher difficulty levels also increase cells dropped from enemies and the level of the Legendary Forge, and allow access to new blueprints and bonus doors scattered through the levels, as well as some that are dropped by enemies exclusive to high BSCs. The doors show the number of Boss Stem Cells required to enter and shine blue if enough are currently active.

Modifiers

# of Boss Stem Cells Modifiers
Boss Stem Cell Icon
- BSC 1 Hard difficulty

- Broken flask 3 Health fountains are only available every other level and Passages without them will instead give a flask recharge. Extra ones can also be purchased from food shops.

+ Advanced Forge Icon Improves the level of the Legendary Forge by allowing you to increase the frequency of + and ++ items up to 100%

+ Unlocks a door in Prison Depths that goes to the Ancient Sewers

+ Unlocks a door in Corrupted Prison that goes to the Ramparts

+ Allows you to collect the next Boss Stem Cell

+ Bosses skip their first phase

2 Boss Cells
- BSC 2 Very Hard difficulty

- Broken flask 4 Removes all health fountains, but gives one flask recharge within Passages. Extra ones can also be purchased from food shops.

+ Advanced Forge Icon Improves the level of the Legendary Forge by allowing you to increase the frequency of S items up to 25%

+ Cell multiplier 1 Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)

+ Unlocks a door in Slumbering Sanctuary that goes to the Cavern

+ Unlocks a door in Forgotten Sepulcher that goes to Guardian's Haven

+ Allows you to collect the next Boss Stem Cell

+ Bosses skip their first phase

3 Boss Cells
- BSC 3 Expert difficulty

- Broken flask 4 Free flask recharges now only appear after the first boss and before the second. Extra ones can also be purchased from food shops.

+ Advanced Forge Icon Improves the level of the Legendary Forge by allowing you to increase the frequency of S items up to 50%

+ Cell multiplier 2 Multiplies the amount of dropped cells by 2 (effect also applies to cells found in containers)

+ Scroll Fragments Allows you to collect Scroll Fragments

+ EpicPower Legendary items and colorless items are improved (Adds +3 to gear power of Legendary items).

+ Unlocks a door in Ramparts that goes to the Insufferable Crypt

+ Allows you to collect the next Boss Stem Cell

+ Bosses skip their first phase

4 Boss Cells
- BSC 4 Nightmare difficulty

+Increases detection range of mobs and gives most of them the ability to teleport next to your position.

- Broken flask 4 Extra flask recharges can only be purchased from food shops.

+ Advanced Forge Icon Improves the level of the Legendary Forge by allowing you to increase the frequency of S items up to 100%

+ Cell multiplier 3 Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)

+ Scroll Fragments Allows you to collect more Scroll Fragments

+ EpicPower Legendary items and colorless items are improved.

+ Allows you to collect the next Boss Stem Cell from The Giant

+ Bosses skip their first phase

5 Boss Cells
- BSC 5 Hell difficulty

- Increases detection range of mobs and gives most of them the ability to teleport next to your position.

- Broken flask 4 Extra flask recharges can only be purchased from food shops.

+ Malaise Icon Malaise is activated.

See the main article for information about malaise.

+ Advanced Forge Icon Improves the level of the Legendary Forge by allowing you to increase the frequency of S items up to 100%

+ Cell multiplier 3 Multiplies the amount of dropped cells by 3 (effect also applies to cells found in containers)

+ Scroll Fragments Allows you to collect more Scroll Fragments

+ EpicPower Legendary items and colorless items are improved.

+ Gives access to the Astrolab and the Observatory (Rise of the Giant DLC content). Entrance to The Astrolab is located at the end of Throne Room.

+ Bosses skip their first phase

+ The Collector's Intern replaces the Collector in Passages.

Trivia

  • When Boss Stem Cells, then named Boss Runes, were added in the v0.5.3 patch of the Foundry Update, they could all be obtained on 0 BSC difficulty and each was dropped by a different boss.

History

  • 0.5
  • .ntroduced.
  • 1.2
  • Introduced 5 BSC difficulty.
  • 1.9
  • Removed Legendary item improvements from 3+ BSC that added one stat of each color.
  • 2.3
  • Adjusted BSC difficulty curve:
    • 2 BSC now grants a flask recharge in every Passage.
    • 3 BSC now grants a flask recharge before the first boss and after the second boss.
    • 4 BSC no longer has the Malaise mechanic.

Gallery

Navigation wiki