Ventilation System

Back in old, barbarian times, Heroes had to depend on the town's gates to move between it and the World Beyond, which put them on par with commoners. This ingenious system of narrow concealed tunnels doesn't do much to freshen the air, but allows heroes to have their own private way around town!

Ventilation System
This secret passage allows Heroes to enter and leave the town without using the gates!
Category	Buildings
Sub Category	Wall Upgrade v1 buildings
Unlocked by	Portal Lock
Blueprint	common
Defence	20
Effect	Bypass closed
Action Points cost	45
Resource cost	×10 ×2 ×2
Conduit d’aération

Use

• Allows heroes to enter and leave Town even when the Town Gates are closed.
• Building it gives 20 to the town.

Notes

• Tamers' Three-legged Labradoodles cannot use the Ventilation System to return items to Town. The Town Gates must be open.
• The Watchtower's teleport does not work if the gate is closed, even with the Ventilation System built.
• Using the Ventilation System will negate the 1 cost of entering the town with the Labyrinth built.
• In Season 6:
  • The rarity of the building decreased from Construction Blueprint (rare) to Construction Blueprint (uncommon).
• In Season 16:
  • The rarity of the building decreased from Construction Blueprint (uncommon) to Construction Blueprint (common).
  • Resource costs changed from ×8 ×1 to ×10 ×2 ×2.

Construction Sites Wall Upgrade v1 Great Pit • Great Moat • Spiked Pit • Old-school traps • Scavenger's Gallery • Wall Upgrade v2 • Inner Wall • Third Wall • Überwall • Evolutive Wall • Metal Patches • Spiked Wall • Slip 'n' Slide • Shredder Wall • Zombie-shredder • Screaming Saws • Wooden Fencing • Small Fence • Barbed Wire • Bait • Plywood • Concrete Reinforcement • Armour Plating • Armour Plating v2 • Armour Plating v3 • Extrawall • Portal Lock • Automatic Piston Lock • Last-minute Lock • Reinforced Gates • Ventilation System • War Mill • Saniflow Macerator • Emergency Supplies • Wood Plating • Guerilla Traps • Rubbish Heap • Mount Killaman-Jaro • Spikes • Pits • Bomb Factory • Abject Panic • Frat House Pump Water Catcher • Drilling Rig • No Holes Barred • Divining Rocket • Eden Project • Mechanical Pump • Divining Rods • Water Purifier • Water Filter • Vaporiser • Boiling Fog • Acid Spray • Gas Gun • Sprinkler System • Mist Spray • Water Turrets • Shooting Gallery • Hydraulic Network • Faucet • Decon Shower • Sluice • Shower • Nature area of the Survivalists • Vegetable Plot • Fertilizer • Grapeboom • Grenade Launcher • Vitamin Mines • Apple Tree • Ravaged pumpkins • Scarecrows • Mines Workshop Factory • Building Registry • Defensive Adjustment • People's Court • Technicians Workbench • Ministry of Slavery • Altar • Butcher • Abbatoir • Cremato-Cue • Pigsty • Henhouse • Central Cafeteria • Small Café • Central Laboratory • Gallows ( Chocolate Cross during Easter Festivities) • Meat Locker Watchtower Observation platform • Scanner • Upgraded Map • Scouts Lair • Predictor • Lighthouse • Battlements • Guard Tower • Guardroom • Miniature Armory • Swedish Workshop • Manual grinder • Pet Shop • Filtering gutters • Tamer Experiment Center • Catapult • Upgraded Catapult • Small Trebuchet • Searchtower • Cannon Mounds • Rock Cannon • Railgun • Plate Gun • Brutal Cannon • Public lights Foundations The Big Rebuild • False Town • Underground city • Labyrinth • Garbage Dump • Organized Dump • Dump Upgrade • All or Nothing • Fortifications • Community Involvement • Urban plan • Defensive Focus • Cinema • Air Strike • Firework Foray • Bonfire • Hot Air Balloon • Giant BRD • Buzzard's Wonder Wheel • Giant Sandcastle • Reactor Sanctuary Soul Purifying Source • Hammam • Pool • Small Cemetary • Coffin Catapult • Infirmary • Architect's Study • Builder's Merchant • Crow Statue • Blue Gold Thermal baths