Hidden Building List (work in progress)

Quick reference for the hidden buildings. Hidden buildings are those where you arrange required buildings in a 3 x 3 pattern and LEAVE THE CENTER EMPTY. Upon construction of all eight buildings, the secret hidden building will be unlocked and created immediately for the current mission.

List

This is an overview of the hidden buildings I've unlocked. If I have time I'll list the required buildings themselves.

There seem to be eight buildings in total. Not all of them are useful in every situation.

NOTE: The required building icons shown here, and those building icons in the deploy screen can sometimes look vastly different, so be on the lookout (took me a while to figure some out).

Open up this pic in a browser window or full-screen to see the contents more clearly.

1/8 Medusa's Lair

x1 A: Disinfection
x1 B: P Resist
x1 B: Radar
x1 C: Light FTRS
x1 C: X Tower
x1 D: Weapon X
x1 E: X Power
x1 F: Mothership

2/8 Gold Center

x1 A: ACCELERATOR
x2 B: BLINK
x2 C: EXP_TOWER
x2 D: SCATTERSHOT
x1 F: STARLIGHT

3/8 Battlecruiser

Requirements (and building group):
x4 C: LGT_TOWER
x4 C: FORTRESS

Notes:

• Creates ONE (x1) Starcraft-style Battlecruiser to fight for you
  
• Shoots a revealing laser straight rightwards, and also fires clusters of arcing lasers
  
• It CAN and WILL die on higher levels
  
• Try to build 2-3 of them to get past Mission Area 5

4/8 Co-Agulant

Required Buildings:
x8 Collector (level 1 NOT level 2 collector)

Notes:
- Creates a freeze item that can be collected on a regular basis
- Freezes all (all?) enemies on the map
- (TBC - feel free to add your observations in comments)

5/8 Olympus

Required Buildings (group + name):
B-GALLOP
B-PURIFIER
B-WARRIOR
B-FORTIFIED
B-MECHANICS
B-ATTRACT
B-BALLISTA
B-ADAPTOR

Notes:

• Maxes out ALL associated building mech traits.
  
• This means movement, fire power, cleaning (purity), health etc
  
• A must for any mission, and one which I build first on a 3 x 3 square.
  
• This means instead of needing x3 Baliista buildings to max out firepower, or x4 Gallops to max walking speed, you just need one of each.
  
• If any squares are unclean, get the Purity square up first - this will allow you to clean the remaining squares to both build multiples faster and get the 10-20% operator discount.

6/8 Tartarus

x1 A: Repair STTN
x1 B: Fire Resist
x1 C: Fire Tower
x1 D: Blaster
x1 D: Flamethrower
x1 E: Fireball
x1 E: Meteorite
x1 F: Phoenix

7/8 Temple of Zeus

x1 A: Stargate
x1 B: Blink
x1 B: Elec Resist
x1 C: Elec Tower
x1 D: Volt
x1 D: Arcgenerator
x1 E: Laserbeam
x1 F: Thunderbird

8/8 Borealis

x1 A: Surveyor
x1 A: Invincible
x1 B: Breakaway
x1 C: Cryo Tower
x1 C: Taunt FTRS
x1 D: Arctic Wind
x1 E: Blizzard
x1 F: Croygenator

[Troff]

Thanks SuperCop! I'll try to update the guide with your info when I get the time.

[MCA]

Tartarus
x1 A: Repair STTN
x1 B: Fire Resist
x1 C: Fire Tower
x1 D: Blaster
x1 D: Flamethrower
x1 E: Fireball
x1 E: Meteorite
x1 F: Phoenix

Temple of Zeus
x1 A: Stargate
x1 B: Blink
x1 B: Elec Resist
x1 C: Elec Tower
x1 D: Volt
x1 D: Arcgenerator
x1 E: Laserbeam
x1 F: Thunderbird

Borealis
x1 A: Surveyor
x1 A: Invincible
x1 B: Breakaway
x1 C: Cryo Tower
x1 C: Taunt FTRS
x1 D: Arctic Wind
x1 E: Blizzard
x1 F: Croygenator

Medusa's Lair
x1 A: Disinfection
x1 B: P Resist
x1 B: Radar
x1 C: Light FTRS
x1 C: X Tower
x1 D: Weapon X
x1 E: X Power
x1 F: Mothership

Gold Center
x1 A: ACCELERATOR
x2 B: BLINK
x2 C: EXP_TOWER
x2 D: SCATTERSHOT
x1 F: STARLIGHT

Battlecruiser
x4 C: LGT_TOWER
x4 C: FORTRESS

Co-Agulant
x8 A: Collector (level 1 NOT level 2 collector)

Olympus
x1 B: GALLOP
x1 B: PURIFIER
x1 B: WARRIOR
x1 B: FORTIFIED
x1 B: MECHANICS
x1 B: ATTRACT
x1 B: BALLISTA
x1 B: ADAPTOR

[Kagutsuchi]

Gold Center
Required Buildings (group + name):
x1 A: ACCELERATOR
x2 B: BLINK
x2 C: EXP_TOWER
x2 D: SCATTERSHOT
x1 F: STARLIGHT

[Kagutsuchi]

Exact same icons, like on pic with all hidden_buildings, located on menu - Information - Buildings, and you can see what buildings still needed to unlock

[Troff]

Yes, the smaller thumbnails (in the menu and the layout screens) do not match to the larger icons when you select them. This is why I also put each building by group (e.g. group A, B etc) so that it's easier for people to find them.

[jgbloomer]

heres a picture. i dont know some of the buildings needed.

[jgbloomer]

Theres the "Gold Center" that collects all the force automatically for you. It showed up in my secrets tab just today.

[Troff]

No problem @CoffeFox94 - if you have the spare time do share any of your own building requirements and observations of the others.

[VillainFox94]

Thank you would have never found these.